Fixed rgba alpha value

Author: photonstorm

v3/src/checksum.js

@@ -1,4 +1,4 @@
 var CHECKSUM = {
-build: 'ecb33c30-5b9a-11e7-b0e6-3fab5c0dcd27'
+build: 'fc3fb9b0-5b9c-11e7-83e9-87986ed5c5cd'
 };
 module.exports = CHECKSUM;

v3/src/graphics/color/Color.js

@@ -96,7 +96,7 @@ Color.prototype = {
 
         this._color = GetColor(this.r, this.g, this.b);
         this._color32 = GetColor32(this.r, this.g, this.b, this.a);
-        this._rgba = 'rgba(' + this.r + ',' + this.g + ',' + this.b + ',' + (255 / this.a) + ')';
+        this._rgba = 'rgba(' + this.r + ',' + this.g + ',' + this.b + ',' + (this.a / 255) + ')';
 
         this.dirty = false;