diff --git a/src/main/res/values/colors.xml b/src/main/res/values/colors.xml
index 157d3c4a..95094338 100644
--- a/src/main/res/values/colors.xml
+++ b/src/main/res/values/colors.xml
@@ -12,7 +12,7 @@
   <color name="md__transparent">#00000000</color>
   <color name="md__defaultBackground">#FF555555</color>
 
-  <color name="material_green_600">#43A047</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 06872c54..72e5bf3e 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -217,7 +217,7 @@ class Shadowsocks
   private lazy val preferences =
     getFragmentManager.findFragmentById(android.R.id.content).asInstanceOf[ShadowsocksSettings]
   private lazy val greyTint = ContextCompat.getColorStateList(this, R.color.material_blue_grey_700)
-  private lazy val greenTint = ContextCompat.getColorStateList(this, R.color.material_green_600)
+  private lazy val greenTint = ContextCompat.getColorStateList(this, R.color.material_green_700)
 
   var handler = new Handler()