Examine source code of weird rainbow

{
  "theme": {
    "images": {
      "theme_frame": "wackyranbow-cut.jpg"
    },
    "colors": {
      "frame": "#00bbff",
      "tab_background_text": "#ff9500"
    }
  },
  "version": "2.0",
  "name": "weird rainbow",
  "manifest_version": 2,
  "description": "this is my first persona"
}