Examine source code of Simple Green

{
  "theme": {
    "images": {
      "theme_frame": "BannerFFox.jpg"
    },
    "colors": {
      "frame": "#5c5353",
      "tab_background_text": "#5c5353"
    }
  },
  "version": "2.0",
  "name": "Simple Green",
  "manifest_version": 2,
  "description": "Lets get green, with this simple and minimal style"
}