Examine source code of galaxy_cool_thing

{
  "name": "galaxy_cool_thing",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "pxfuel.jpg"
    },
    "colors": {
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(52, 200, 241)",
      "toolbar": "rgba(225, 234, 239, 0)",
      "bookmark_text": "rgb(52, 200, 241)",
      "toolbar_field": "rgba(0, 0, 0, 0.72)",
      "toolbar_field_text": "rgb(52, 200, 241)",
      "tab_line": "rgb(52, 200, 241)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b26d37a-7e8c-4912-a44c-b8e837028cd0}"
    }
  }
}