Examine source code of Industrialist

{
  "theme": {
    "images": {
      "theme_frame": "metal-header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ff6a00"
    }
  },
  "version": "2.0",
  "name": "Industrialist",
  "manifest_version": 2,
  "description": "Dark with orange text and Firefox splatter logo. Looks great on 13\" macbook."
}