Examine source code of Firefox Neon

{
  "theme": {
    "images": {
      "theme_frame": "firefoxneonA.png"
    },
    "colors": {
      "frame": "#eeff00",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Firefox Neon",
  "manifest_version": 2,
  "description": "I got the firefox logo and made it neon. It's a bit hard to tell but look and you may find."
}