Examine source code of sushi_for_mac

{
  "theme": {
    "images": {
      "theme_frame": "sushi.jpg"
    },
    "colors": {
      "frame": "#e3feff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "sushi_for_mac",
  "manifest_version": 2,
  "description": "mmmm sushi!!!!\n\nhope u like it!!"
}