Fix getColors #2: add blue/blueLight (JavaScript hoisting)

The file had two getColors() function declarations. The second
one (hoisted later) wins and was missing the new keys. Both
declarations updated.

background.html

@@ -595,7 +595,8 @@ if (useVanta && typeof VANTA !== 'undefined') {
             var keys = [
                 'void', 'panel', 'raised', 'border', 'mid', 'ash',
                 'icon', 'stone', 'bone', 'chalk',
-                'ember', 'gold', 'blood', 'rust', 'rot', 'moss', 'steel', 'steelLight', 'violet'
+                'ember', 'gold', 'blood', 'rust', 'rot', 'moss',
+                'steel', 'steelLight', 'blue', 'blueLight', 'violet'
             ];
             var map = {
                 void: 'black',
@@ -611,7 +612,9 @@ if (useVanta && typeof VANTA !== 'undefined') {
                 rot: 'pink',
                 moss: 'green',
                 steel: 'blue',
-                steelLight: 'blue-light',
+                steelLight: 'blue',
+                blue: 'blue',
+                blueLight: 'blue-light',
                 violet: 'purple'
             };
             var result = {};