Examine source code of Snack-Attack

{
  "theme": {
    "images": {
      "theme_frame": "supersnack-header.JPG"
    },
    "colors": {
      "frame": "#031e2e",
      "tab_background_text": "#031433"
    }
  },
  "version": "2.0",
  "name": "Snack-Attack",
  "manifest_version": 2,
  "description": "Super Snack Attack, with a white background and loads of delicious goodies! :P"
}