Examine source code of Autumn Rays

{
  "theme": {
    "images": {
      "theme_frame": "AutumnRays-Header.jpg"
    },
    "colors": {
      "frame": "#f27e12",
      "tab_background_text": "#f27e12"
    }
  },
  "version": "2.0",
  "name": "Autumn Rays",
  "manifest_version": 2
}