Examine source code of Ambience

{
  "theme": {
    "images": {
      "theme_frame": "FinalAmbienceHeader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Ambience",
  "manifest_version": 2,
  "description": "Specifically designed for my HP Laptop's resolution screen (1280x800).\n\nAll images are (c) Retsu / R3TSU.\nVisit My Gallery @ R3TSU.DeviantART.com\n\nPS: Excuse my laziness.. I actually made a GOOD version to suit the browser, but meh.. the dimensions Firefox specified just made it look stupid when I tested it."
}