Examine source code of Firefox Professional

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0daeff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Firefox Professional",
  "manifest_version": 2,
  "description": "Whether You Are Professional Or A Beginner.This Theme Firefox Rocks Will Always Make You Special.Please Contribute Us For More Themes And Add-Ons.\nAnuj And Ankit Kumar From India."
}