Examine source code of Elegance

{
  "name": "Elegance",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "abstrakt220.png"
    },
    "colors": {
      "frame": "rgba(84, 63, 26, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(181, 170, 155, 0.58)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(92, 70, 20, 0.43)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(163, 133, 81, 0.4)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{891d006d-d0c6-4ff3-a334-8e160b1e92c3}"
    }
  }
}