Examine source code of Curious Cat

{
  "theme": {
    "images": {
      "theme_frame": "CuriousCatHEADER.jpg"
    },
    "colors": {
      "frame": "#cc9900",
      "tab_background_text": "#3366ff"
    }
  },
  "version": "2.0",
  "name": "Curious Cat",
  "manifest_version": 2,
  "description": "Made for 1280 x 1024 res., 3 toolbars showing."
}