diff --git a/app/src/main/res/drawable-v21/button.xml b/app/src/main/res/drawable-v21/button.xml
deleted file mode 100644
index a95fb637..00000000
--- a/app/src/main/res/drawable-v21/button.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-
-
-
-
diff --git a/app/src/main/res/drawable/button.xml b/app/src/main/res/drawable/button.xml
index 08b222b1..3557bc01 100644
--- a/app/src/main/res/drawable/button.xml
+++ b/app/src/main/res/drawable/button.xml
@@ -3,7 +3,4 @@
-
diff --git a/app/src/main/res/drawable/button_normal.xml b/app/src/main/res/drawable/button_normal.xml
deleted file mode 100644
index e42ad7d5..00000000
--- a/app/src/main/res/drawable/button_normal.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-
-
-
-
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 8f896ee4..9363c30d 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -9,6 +9,7 @@
#303F9F
#FF4081
#88000000
- #99000000
+ #22000000