diff --git a/README.md b/README.md
index 3d4215c..2ddb7ea 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 <br>
 <a href="https://travis-ci.org/tidwall/gjson"><img src="https://img.shields.io/travis/tidwall/gjson.svg?style=flat-square" alt="Build Status"></a>
 <a href="https://godoc.org/github.com/tidwall/gjson"><img src="https://img.shields.io/badge/api-reference-blue.svg?style=flat-square" alt="GoDoc"></a>
-<a href="http://tidwall.com/gjson-play"><img src="https://img.shields.io/badge/play-ground-ff00ff.svg?style=flat-square" alt="GJSON Playground"></a>
+<a href="http://tidwall.com/gjson-play"><img src="https://img.shields.io/badge/play-ground-9900cc.svg?style=flat-square" alt="GJSON Playground"></a>
 </p>