Examine source code of Off-Topic Radio Network

{
  "theme": {
    "images": {
      "theme_frame": "OTRNFirfoxheader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ababab"
    }
  },
  "version": "2.0",
  "name": "Off-Topic Radio Network",
  "manifest_version": 2,
  "description": "Show you support and proudly wear the Off-Topic Radio Network persona!!"
}