Examine source code of Incredibots Space Theme

{
  "theme": {
    "images": {
      "theme_frame": "SpaceHeader.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Incredibots Space Theme",
  "manifest_version": 2,
  "description": "A space variant of the Incredibots Theme for Firefox. Uses the genuine space background from the game, as well as the genuine logo, just as it appears."
}