Examine source code of Hellfire Flames

{
  "theme": {
    "images": {
      "theme_frame": "ff3000x200hdr.JPG"
    },
    "colors": {
      "frame": "#f5eded",
      "tab_background_text": "#f5eded"
    }
  },
  "version": "2.0",
  "name": "Hellfire Flames",
  "manifest_version": 2,
  "description": "*fixed* Hot Flames Devour the Browser"
}