Examine source code of Red Thistle

{
  "theme": {
    "images": {
      "theme_frame": "Thistle.JPG"
    },
    "colors": {
      "frame": "#faf20a",
      "tab_background_text": "#e7ff0d"
    }
  },
  "version": "2.0",
  "name": "Red Thistle",
  "manifest_version": 2,
  "description": "Red Thistle"
}