Examine source code of Rainbow Foxes

{
  "name": "Rainbow Foxes",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Rainbow Foxes.png"
    },
    "colors": {
      "frame": "rgba(8, 31, 47, 1)",
      "tab_background_text": "rgba(27, 136, 219, 1)",
      "toolbar": "rgba(8, 31, 48, 0)",
      "bookmark_text": "rgba(214, 236, 255, 1)",
      "toolbar_field": "rgba(8, 31, 48, 0)",
      "toolbar_field_text": "rgba(214, 236, 255, 1)",
      "tab_line": "rgba(27, 136, 219, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{093bcff4-eb14-4355-9739-082d5652ccf0}"
    }
  }
}