Examine source code of Marvins Monkey Fur

{
  "theme": {
    "images": {
      "theme_frame": "monkeyfurheader.png"
    },
    "colors": {
      "frame": "#383636",
      "tab_background_text": "#050505"
    }
  },
  "version": "2.0",
  "name": "Marvins Monkey Fur",
  "manifest_version": 2,
  "description": "Marvins Monkey Fur to keep your Firefox warm\n;P"
}