diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 7f926cc3..72fe2aa2 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -12,7 +12,6 @@
         android:layout_alignParentBottom="true"
         android:layout_marginEnd="10dp"
         android:layout_marginBottom="90dp"
-        android:background="@color/colorPrimary"
         android:contentDescription="@string/clean_log"
         android:scaleType="centerCrop"
         android:src="@drawable/ic_delete"
diff --git a/app/src/main/res/layout/activity_rule.xml b/app/src/main/res/layout/activity_rule.xml
index c48cefca..5a27c916 100644
--- a/app/src/main/res/layout/activity_rule.xml
+++ b/app/src/main/res/layout/activity_rule.xml
@@ -12,7 +12,6 @@
         android:layout_alignParentBottom="true"
         android:layout_marginEnd="10dp"
         android:layout_marginBottom="20dp"
-        android:background="@color/colorPrimary"
         android:contentDescription="@string/setrule"
         android:scaleType="centerCrop"
         android:src="@drawable/ic_add"
diff --git a/app/src/main/res/layout/activity_sender.xml b/app/src/main/res/layout/activity_sender.xml
index 6c784b65..72571b3f 100644
--- a/app/src/main/res/layout/activity_sender.xml
+++ b/app/src/main/res/layout/activity_sender.xml
@@ -12,7 +12,6 @@
         android:layout_alignParentBottom="true"
         android:layout_marginEnd="10dp"
         android:layout_marginBottom="20dp"
-        android:background="@color/colorPrimary"
         android:contentDescription="@string/new_sender"
         android:scaleType="centerCrop"
         android:src="@drawable/ic_add"