Examine source code of price-guard

{
  "theme": {
    "images": {
      "theme_frame": "kopf.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "price-guard",
  "manifest_version": 2,
  "description": "Handys - Mobilfunk - Multimedia - Outdoor"
}