Examine source code of Crystal Gemstones

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#e0d3e3",
      "tab_background_text": "#360638"
    }
  },
  "version": "2.0",
  "name": "Crystal Gemstones",
  "manifest_version": 2,
  "description": "Crystal gemstones at a 'frost' crystal background"
}