Examine source code of Blue 2.0

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Blue 2.0",
  "manifest_version": 2,
  "description": "I hope you all like this, took me about 10 min to make it in Photoshop, was pretty fun ^^.If anyone would like i can give you the .psd :)."
}