Examine source code of mozilla feathers

{
  "theme": {
    "images": {
      "theme_frame": "mozillafeatherssupersmall.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "mozilla feathers",
  "manifest_version": 2,
  "description": "a persona that holds a design with the tails and wings of Firefox,Thunderbird and Sunbird."
}