Examine source code of super rainbow stars

{
  "theme": {
    "images": {
      "theme_frame": "smilefooter.png"
    },
    "colors": {
      "frame": "#e00d0d",
      "tab_background_text": "#f20c0c"
    }
  },
  "version": "2.0",
  "name": "super  rainbow stars",
  "manifest_version": 2,
  "description": "this is my first try just to see how it would come out"
}