diff --git a/test/mediawiki-definecolor.js b/test/mediawiki-definecolor.js
new file mode 100644
index 00000000..0e0654e5
--- /dev/null
+++ b/test/mediawiki-definecolor.js
@@ -0,0 +1,20 @@
+var tape = require('tape');
+var mjAPI = require("../lib/main.js");
+
+tape('mediawiki-texvc test: check MathJax core', function(t) {
+    t.plan(1);
+
+    var tex = '\\definecolor{myorange}{RGB}{255,165,100}\\color{myorange}e^{i \\pi}\\color{Black} = -1';
+    mjAPI.config( {
+        extensions: 'TeX/autoload-all', // a convenience option to add MathJax extensions
+    });
+    mjAPI.start();
+
+    mjAPI.typeset({
+        math: tex,
+        format: "inline-TeX",
+        mml: true
+    }, function(data) {
+        t.ok(!data.errors, 'definecolor should be a known function');
+    });
+});