diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 995a594..e402ebe 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -8,4 +8,6 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
     <color name="progressBarOverlay">#33FFFFFF</color>
+    <!-- WhatSMS brand colors -->
+    <color name="primary">#25D366</color>
 </resources>
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