Examine source code of Frosty Glass

{
  "manifest_version": 2,
  "name": "Frosty Glass",
  "version": "1.1",
  "description": "Frosty Glass Theme für Firefox – Toolbar, URL-Leiste, Menüs, Dropdowns, Formularfelder.",
  "theme": {
    "colors": {
      "frame": "rgba(200, 220, 255, 0.15)",
      "tab_background_text": "rgba(0,0,0,0.85)",
      "tab_line": "rgba(180,200,255,0.3)",
      "tab_text": "rgba(0,0,0,0.85)",
      "tab_selected": "rgba(200, 220, 255, 0.15)",
      "toolbar": "rgba(200, 220, 255, 0.15)",
      "toolbar_text": "rgba(0,0,0,0.85)",
      "toolbar_field": "rgba(200, 220, 255, 0.15)",
      "toolbar_field_text": "rgba(0,0,0,0.85)",
      "toolbar_field_border": "rgba(180,200,255,0.3)",
      "toolbar_field_border_focus": "rgba(180,200,255,0.5)",
      "toolbar_field_focus": "rgba(200, 220, 255, 0.25)",
      "toolbar_top_separator": "rgba(180,200,255,0.3)",
      "toolbar_bottom_separator": "rgba(180,200,255,0.3)",
      "popup": "rgba(200,220,255,0.8)",
      "popup_text": "rgba(0,0,0,0.85)",
      "popup_border": "rgba(180,200,255,0.25)",
      "popup_highlight": "rgba(180,200,255,0.3)",
      "popup_highlight_text": "rgba(0,0,0,0.85)",
      "sidebar": "rgba(200,220,255,0.8)",
      "sidebar_text": "rgba(0,0,0,0.85)",
      "sidebar_border": "rgba(180,200,255,0.25)",
      "sidebar_highlight": "rgba(180,200,255,0.3)",
      "sidebar_highlight_text": "rgba(0,0,0,0.85)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "frosty-glass@example.com"
    }
  }
}