Added fix for cms sass

cms/static/sass/_base.scss

@@ -14,6 +14,10 @@ $yellow: #fff8af;
 $cream: #F6EFD4;
 $border-color: #ddd;
 
+// edX colors
+$blue: rgb(29,157,217);
+$pink: rgb(182,37,104);
+
 @mixin hide-text {
   background-color: transparent;
   border:           0;