Examine source code of animated-koi-fish

{
  "name": "animated-koi-fish",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "animated-koi-fish.gif"
    },
    "colors": {
      "frame": "rgba(0, 50, 77, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 50, 77, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 22, 36, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 132, 214, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b4680f2-1d33-4d64-8093-0dc43e9ae13d}"
    }
  }
}