diff --git a/src/app/index.run.js b/src/app/index.run.js
index 3d1bb8c..238b66e 100644
--- a/src/app/index.run.js
+++ b/src/app/index.run.js
@@ -7,6 +7,7 @@
     .run(runAuth)
     .run(runAccessibility)
     .run(runPath)
+    .run(runColorUtils)
     .run(runBlock);
 
   /** @ngInject */
@@ -82,6 +83,30 @@
   }
 
   /** @ngInject */
+  function runColorUtils($log) {
+    
+    window.ColorLuminance = function (hex, lum) {
+
+      // validate hex string
+      hex = String(hex).replace(/[^0-9a-f]/gi, '');
+      if (hex.length < 6) {
+        hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2];
+      }
+      lum = lum || 0;
+
+      // convert to decimal and change luminosity
+      var rgb = "#", c, i;
+      for (i = 0; i < 3; i++) {
+        c = parseInt(hex.substr(i*2,2), 16);
+        c = Math.round(Math.min(Math.max(0, c + (c * lum)), 255)).toString(16);
+        rgb += ("00"+c).substr(c.length);
+      }
+
+      return rgb;
+    }
+  }
+
+  /** @ngInject */
   function runBlock($log) {
     $log.debug('runBlock end.');
   }
--
libgit2 0.21.2