Examine source code of ColorRays

{
  "theme": {
    "images": {
      "theme_frame": "raysjpghead.jpg"
    },
    "colors": {
      "frame": "#a9d615",
      "tab_background_text": "#e7f703"
    }
  },
  "version": "2.0",
  "name": "ColorRays",
  "manifest_version": 2,
  "description": "Colorful rays,red,blue,green,yellow"
}