Examine source code of When it all Changes

{
  "theme": {
    "images": {
      "theme_frame": "TorchwoodFirefox.jpg"
    },
    "colors": {
      "frame": "#867ec2",
      "tab_background_text": "#60469c"
    }
  },
  "version": "2.0",
  "name": "When it all Changes",
  "manifest_version": 2,
  "description": "Torchwood slogan"
}