Examine source code of Krakakak Black

{
  "theme": {
    "images": {
      "theme_frame": "KrakakakBlackTop.jpg"
    },
    "colors": {
      "frame": "#a6a6a6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Krakakak Black",
  "manifest_version": 2,
  "description": "Black dark version of the Krakakak theme. Fits a minimal firefox setup: no menu bar, small icons, and no toolbars."
}