Examine source code of Rainbow_Star

{
  "theme": {
    "images": {
      "theme_frame": "rainbow_star.jpg"
    },
    "colors": {
      "frame": "#ffa1a1",
      "tab_background_text": "#6c007d"
    }
  },
  "version": "2.0",
  "name": "Rainbow_Star",
  "manifest_version": 2
}