Examine source code of Satan Fox 2.1

{
  "theme": {
    "images": {
      "theme_frame": "satan-fox2.1.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Satan Fox 2.1",
  "manifest_version": 2,
  "description": "The Background isn´t so fuzzy anymore and the Structure of Firefox is back. The yellow Line is deleted."
}