Disable colors in Edge and Internet Explorer (fixes #417)

Author: ibc

src/browser.js

@@ -49,6 +49,11 @@ function useColors() {
     return true;
   }
 
+  // Internet Explorer and Edge do not support colors.
+  if (typeof navigator !== 'undefined' && navigator.userAgent && !navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
+    return false;
+  }
+
   // is webkit? http://stackoverflow.com/a/16459606/376773
   // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
   return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||