Examine source code of BigFish

{
  "theme": {
    "images": {
      "theme_frame": "watertank.jpg"
    },
    "colors": {
      "frame": "#fafa3c",
      "tab_background_text": "#bac"
    }
  },
  "version": "2.0",
  "name": "BigFish",
  "manifest_version": 2,
  "description": "dun ns dun na dun na"
}