diff --git a/src/main/res/values/colors.xml b/src/main/res/values/colors.xml
index 333f4545..311f4003 100644
--- a/src/main/res/values/colors.xml
+++ b/src/main/res/values/colors.xml
@@ -2,7 +2,7 @@
 
 <resources>
 
-  <color name="material_green_a700">#64DD17</color>
+  <color name="material_green_700">#388E3C</color>
   <color name="material_blue_grey_300">#90A4AE</color>
   <color name="material_blue_grey_500">#607D8B</color>
   <color name="material_blue_grey_700">#455A64</color>
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 95a78ec9..d2c6646d 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -210,7 +210,7 @@ class Shadowsocks
     getFragmentManager.findFragmentById(android.R.id.content).asInstanceOf[ShadowsocksSettings]
   private var adView: AdView = _
   private lazy val greyTint = ContextCompat.getColorStateList(this, R.color.material_blue_grey_700)
-  private lazy val greenTint = ContextCompat.getColorStateList(this, R.color.material_green_a700)
+  private lazy val greenTint = ContextCompat.getColorStateList(this, R.color.material_green_700)
 
   var handler = new Handler()