diff --git a/WarpDrinkApp/app/src/main/res/drawable/btn_blue.xml b/WarpDrinkApp/app/src/main/res/drawable/btn_blue.xml
deleted file mode 100644
index 72d8cfe2c4ca46bb1dc8530fe026b297acba1bb8..0000000000000000000000000000000000000000
--- a/WarpDrinkApp/app/src/main/res/drawable/btn_blue.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_pressed="true" >
-        <shape>
-        	<solid
-        		android:color="#449def" />
-            <stroke
-                android:width="1dp"
-                android:color="#2f6699" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item android:state_enabled="false">
-        <shape>
-            <solid
-                android:color="#bbbbbb" />
-            <stroke
-                android:width="1dp"
-                android:color="#bbbbbb" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item>
-        <shape>
-            <gradient
-                android:startColor="#449def"
-                android:endColor="#2f6699"
-                android:angle="270" />
-            <stroke
-                android:width="1dp"
-                android:color="#2f6699" />
-            <corners
-                android:radius="4dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-</selector>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/drawable/btn_green.xml b/WarpDrinkApp/app/src/main/res/drawable/btn_green.xml
deleted file mode 100644
index 4c89ae137b27a4899cbc8bfc26b7daa54b429c70..0000000000000000000000000000000000000000
--- a/WarpDrinkApp/app/src/main/res/drawable/btn_green.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_pressed="true" >
-        <shape>
-            <solid
-                android:color="#70c656" />
-            <stroke
-                android:width="1dp"
-                android:color="#53933f" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item android:state_enabled="false">
-        <shape>
-            <solid
-                android:color="#bbbbbb" />
-            <stroke
-                android:width="1dp"
-                android:color="#bbbbbb" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item>
-        <shape>
-            <gradient
-                android:startColor="#70c656"
-                android:endColor="#53933f"
-                android:angle="270" />
-            <stroke
-                android:width="1dp"
-                android:color="#53933f" />
-            <corners
-                android:radius="4dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-</selector>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/drawable/btn_red.xml b/WarpDrinkApp/app/src/main/res/drawable/btn_red.xml
deleted file mode 100644
index 74c18eaf671bafbb1a71f4ed9a2584c9f0bc8581..0000000000000000000000000000000000000000
--- a/WarpDrinkApp/app/src/main/res/drawable/btn_red.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_pressed="true" >
-        <shape>
-            <solid
-                android:color="#ef4444" />
-            <stroke
-                android:width="1dp"
-                android:color="#992f2f" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item android:state_enabled="false">
-        <shape>
-            <solid
-                android:color="#bbbbbb" />
-            <stroke
-                android:width="1dp"
-                android:color="#bbbbbb" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item>
-        <shape>
-            <gradient
-                android:startColor="#ef4444"
-                android:endColor="#992f2f"
-                android:angle="270" />
-            <stroke
-                android:width="1dp"
-                android:color="#992f2f" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-</selector>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/drawable/btn_yellow.xml b/WarpDrinkApp/app/src/main/res/drawable/btn_yellow.xml
deleted file mode 100644
index 6a9695fc49a7afc78339dbb7b9d67f88f0cd898d..0000000000000000000000000000000000000000
--- a/WarpDrinkApp/app/src/main/res/drawable/btn_yellow.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_pressed="true" >
-        <shape>
-            <solid
-                android:color="#f3ae1b" />
-            <stroke
-                android:width="1dp"
-                android:color="#bb6008" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item android:state_enabled="false">
-        <shape>
-            <solid
-                android:color="#bbbbbb" />
-            <stroke
-                android:width="1dp"
-                android:color="#bbbbbb" />
-            <corners
-                android:radius="3dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-    <item>
-        <shape>
-            <gradient
-                android:startColor="#f3ae1b"
-                android:endColor="#bb6008"
-                android:angle="270" />
-            <stroke
-                android:width="1dp"
-                android:color="#bb6008" />
-            <corners
-                android:radius="4dp" />
-            <padding
-                android:left="10dp"
-                android:top="10dp"
-                android:right="10dp"
-                android:bottom="10dp" />
-        </shape>
-    </item>
-</selector>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/layout/activity_main.xml b/WarpDrinkApp/app/src/main/res/layout/activity_main.xml
index cb7a869a0c3f5d0f9e193a0f89aa8b7894fe03ca..433704cf2417a4b045a4970278db8b0c591ee1ad 100644
--- a/WarpDrinkApp/app/src/main/res/layout/activity_main.xml
+++ b/WarpDrinkApp/app/src/main/res/layout/activity_main.xml
@@ -41,24 +41,39 @@
                         android:layout_height="20px" />
 
                     <AutoCompleteTextView
-                        android:layout_width="340dp"
-                        android:layout_height="wrap_content"
+                        android:layout_width="254dp"
+                        android:layout_height="match_parent"
                         android:id="@+id/atxvName"
                         android:imeOptions="actionNext"
                         android:singleLine="true"
                         android:layout_columnSpan="1"
                         android:layout_row="0"
-                        android:layout_column="0"
-                        android:layout_weight="0.54" />
+                        android:layout_column="0" />
+
+                    <Space
+                        android:layout_width="8dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="0.43" />
+
+                    <Button
+                        android:id="@+id/btnGuest"
+                        android:layout_width="72dp"
+                        android:layout_height="40dp"
+                        android:layout_gravity="center_vertical"
+                        android:text="Gast" />
+
+                    <Space
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="0.52" />
 
                     <ImageButton
-                        android:layout_width="30dp"
-                        android:layout_height="30dp"
                         android:id="@+id/btnRefresh"
-                        android:scaleType="fitXY"
+                        android:layout_width="35dp"
+                        android:layout_height="35dp"
+                        android:layout_gravity="center_vertical"
                         android:background="@drawable/ic_menu_refresh"
-                        android:onClick="onClick"
-                        android:layout_gravity="center_vertical" />
+                        android:onClick="onClick" />
                 </LinearLayout>
 
                 <Space
@@ -90,37 +105,46 @@
 
 
                 <LinearLayout
-                    android:orientation="horizontal"
                     android:layout_width="match_parent"
-                    android:layout_height="60dp">
+                    android:layout_height="60dp"
+                    android:orientation="horizontal">
 
                     <Space
                         android:layout_width="20px"
                         android:layout_height="20px" />
 
                     <TextView
+                        android:id="@+id/txtCredit"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
-                        android:textAppearance="?android:attr/textAppearanceMedium"
+                        android:layout_gravity="center_vertical"
                         android:text="Guthaben: "
-                        android:id="@+id/txtCredit"
-                        android:layout_gravity="center_vertical" />
-                    <View  android:layout_width="0dp"
+                        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+                    <View
+                        android:layout_width="0dp"
                         android:layout_height="0dp"
                         android:layout_weight="1" />
+
+                    <Space
+                        android:layout_width="20px"
+                        android:layout_height="20px"
+                        android:layout_weight="1" />
+
                     <Button
-                        style="@style/ButtonText"
-                        android:text="@string/btnLogout"
                         android:id="@+id/btnLogout"
-                        android:background="@drawable/btn_red"
-                        android:layout_row="3"
+                        style="@style/ButtonText"
+                        android:layout_width="140dp"
+                        android:layout_height="30dp"
                         android:layout_column="1"
+                        android:layout_gravity="center_vertical"
+                        android:layout_row="3"
                         android:width="10dp"
-                        android:layout_width="140dp"
-                        android:layout_height="50dp"
-                        android:layout_gravity="right"
+                        android:background="@color/flatui_red"
                         android:onClick="onClick"
+                        android:text="@string/btnLogout"
                         android:textSize="20dp" />
+
                 </LinearLayout>
 
                 <ListView
@@ -159,32 +183,34 @@
             android:layout_height="match_parent">
 
             <Button
-                style="@style/ButtonText"
-                android:text="@string/btnCharge"
                 android:id="@+id/btnCharge"
-                android:background="@drawable/btn_yellow"
-                android:layout_row="40"
+                style="@style/ButtonText"
+                android:layout_width="300dp"
+                android:layout_height="50dp"
                 android:layout_column="1"
+                android:layout_gravity="center_vertical"
+                android:layout_row="40"
                 android:width="10dp"
-                android:layout_width="300dp"
+                android:background="@color/flatui_yellow"
                 android:onClick="onClick"
-                android:layout_height="60dp" />
+                android:text="@string/btnCharge" />
 
             <Space
                 android:layout_width="200px"
                 android:layout_height="20px" />
 
             <Button
-                style="@style/ButtonText"
-                android:text="@string/btn_pay"
                 android:id="@+id/btnPay"
-                android:background="@drawable/btn_green"
-                android:layout_row="4"
+                style="@style/ButtonText"
+                android:layout_width="355dp"
+                android:layout_height="50dp"
                 android:layout_column="0"
+                android:layout_gravity="center_vertical"
+                android:layout_row="4"
                 android:width="10dp"
-                android:layout_width="355dp"
+                android:background="@color/flatui_green"
                 android:onClick="onClick"
-                android:layout_height="wrap_content" />
+                android:text="@string/btn_pay" />
         </LinearLayout>
 
         <EditText
diff --git a/WarpDrinkApp/app/src/main/res/layout/charge_custom_dialog.xml b/WarpDrinkApp/app/src/main/res/layout/charge_custom_dialog.xml
index d1fb2c5321ff61cccbbcce5fba1efe43f8a428f6..86b3d3d8fdd3e7217851e28562bdbf9621f525a5 100644
--- a/WarpDrinkApp/app/src/main/res/layout/charge_custom_dialog.xml
+++ b/WarpDrinkApp/app/src/main/res/layout/charge_custom_dialog.xml
@@ -10,15 +10,15 @@
         android:id="@+id/numPick" />
 
     <Button
-        style="@style/ButtonText"
-        android:text="@string/btnCharge"
         android:id="@+id/btnCustomCharge"
-        android:background="@drawable/btn_blue"
-        android:layout_row="3"
+        style="@style/ButtonText"
+        android:layout_width="300dp"
+        android:layout_height="wrap_content"
         android:layout_column="1"
+        android:layout_row="3"
         android:width="10dp"
-        android:layout_width="300dp"
-        android:layout_height="wrap_content" />
+        android:background="@color/flatui_blue"
+        android:text="@string/btnCharge" />
 
 
 </LinearLayout>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/layout/charge_dialog.xml b/WarpDrinkApp/app/src/main/res/layout/charge_dialog.xml
index b7ffd531b422ed883191e6542c1ce6f95e7223ee..944a94a7811eb10cfa11c6f14920d0abc64954f7 100644
--- a/WarpDrinkApp/app/src/main/res/layout/charge_dialog.xml
+++ b/WarpDrinkApp/app/src/main/res/layout/charge_dialog.xml
@@ -9,26 +9,26 @@
         android:layout_height="wrap_content">
 
         <Button
-            style="@style/ButtonText"
-            android:text="@string/btnFiveEuro"
             android:id="@+id/btnFiveEuro"
-            android:background="@drawable/btn_blue"
-            android:layout_row="3"
+            style="@style/ButtonText"
+            android:layout_width="300dp"
+            android:layout_height="wrap_content"
             android:layout_column="1"
+            android:layout_row="3"
             android:width="10dp"
-            android:layout_width="300dp"
-            android:layout_height="wrap_content" />
+            android:background="@color/flatui_blue"
+            android:text="@string/btnFiveEuro" />
 
         <Button
-            style="@style/ButtonText"
-            android:text="@string/btnTenEuro"
             android:id="@+id/btnTenEuro"
-            android:background="@drawable/btn_blue"
-            android:layout_row="3"
+            style="@style/ButtonText"
+            android:layout_width="300dp"
+            android:layout_height="wrap_content"
             android:layout_column="1"
+            android:layout_row="3"
             android:width="10dp"
-            android:layout_width="300dp"
-            android:layout_height="wrap_content" />
+            android:background="@color/flatui_blue"
+            android:text="@string/btnTenEuro" />
     </LinearLayout>
 
     <LinearLayout
@@ -37,26 +37,26 @@
         android:layout_height="fill_parent" >
 
         <Button
-            style="@style/ButtonText"
-            android:text="@string/btnTwentyEuro"
             android:id="@+id/btnTwentyEuro"
-            android:background="@drawable/btn_blue"
-            android:layout_row="3"
+            style="@style/ButtonText"
+            android:layout_width="300dp"
+            android:layout_height="wrap_content"
             android:layout_column="1"
+            android:layout_row="3"
             android:width="10dp"
-            android:layout_width="300dp"
-            android:layout_height="wrap_content" />
+            android:background="@color/flatui_blue"
+            android:text="@string/btnTwentyEuro" />
 
         <Button
-            style="@style/ButtonText"
-            android:text="@string/btnOther"
             android:id="@+id/btnOther"
-            android:background="@drawable/btn_blue"
-            android:layout_row="3"
+            style="@style/ButtonText"
+            android:layout_width="300dp"
+            android:layout_height="wrap_content"
             android:layout_column="1"
+            android:layout_row="3"
             android:width="10dp"
-            android:layout_width="300dp"
-            android:layout_height="wrap_content" />
+            android:background="@color/flatui_blue"
+            android:text="@string/btnOther" />
     </LinearLayout>
 
 
diff --git a/WarpDrinkApp/app/src/main/res/layout/order_list_item.xml b/WarpDrinkApp/app/src/main/res/layout/order_list_item.xml
index 521b7fc0690165fbdbbe82026ce5c61f35187a8a..653457647d054a8c8d9b2e3ab93489edbce653f4 100644
--- a/WarpDrinkApp/app/src/main/res/layout/order_list_item.xml
+++ b/WarpDrinkApp/app/src/main/res/layout/order_list_item.xml
@@ -6,8 +6,9 @@
 
     <LinearLayout
         android:orientation="vertical"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_width="384dp"
+        android:layout_height="match_parent"
+        android:layout_weight="0.25">
 
         <TextView
             android:layout_width="wrap_content"
@@ -27,10 +28,12 @@
 
     <ImageButton
         android:id="@+id/btnRemoveOrder"
-        android:layout_width="20dp"
-        android:layout_height="fill_parent"
+        android:layout_width="123dp"
+        android:layout_height="50dp"
+        android:layout_gravity="right"
+        android:background="@color/flatui_red"
         android:contentDescription="@string/app_name"
         android:onClick="removeOrderOnClickHandler"
-        android:src="@android:drawable/ic_menu_delete"
-        android:layout_gravity="right" />
+        android:src="@android:drawable/ic_menu_delete" />
+
 </LinearLayout>
\ No newline at end of file
diff --git a/WarpDrinkApp/app/src/main/res/values/colors.xml b/WarpDrinkApp/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000000000000000000000000000000000000..6bab7fe29f89d87ce92000ce48c27a2b3833bb14
--- /dev/null
+++ b/WarpDrinkApp/app/src/main/res/values/colors.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="flatui_red">#e74c3c</color>
+    <color name="flatui_blue">#2980b9</color>
+    <color name="flatui_green">#27ae60</color>
+    <color name="flatui_yellow">#f1c40f</color>
+</resources>
\ No newline at end of file