Examine source code of sumering

{
  "theme": {
    "images": {
      "theme_frame": "4.png"
    },
    "colors": {
      "frame": "#804a4a",
      "tab_background_text": "#c46e6e"
    }
  },
  "version": "2.0",
  "name": "sumering",
  "manifest_version": 2,
  "description": "holaq"
}