Examine source code of Cold Smoke

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cold Smoke",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(59, 66, 82)",
      "toolbar_text": "rgb(198, 205, 217)",
      "frame": "rgb(46, 52, 64)",
      "tab_background_text": "rgb(76, 86, 106)",
      "toolbar_field": "rgb(198, 205, 217)",
      "toolbar_field_text": "rgb(55, 65, 85)",
      "tab_line": "rgb(76, 86, 106)",
      "popup": "rgb(59, 66, 82)",
      "popup_text": "rgb(93, 106, 130)",
      "button_background_active": "rgb(72, 82, 101)",
      "button_background_hover": "rgb(67, 76, 94)",
      "icons": "rgb(93, 106, 130)",
      "popup_border": "rgb(214, 214, 214)",
      "popup_highlight": "rgb(76, 86, 106)",
      "sidebar_highlight_text": "rgb(114, 192, 190)",
      "sidebar_highlight": "rgb(67, 76, 94)",
      "sidebar_text": "rgb(112, 118, 130)",
      "sidebar": "rgb(59, 66, 82)",
      "tab_selected": "rgb(67, 76, 94)",
      "tab_text": "rgb(216, 222, 233)",
      "toolbar_field_border_focus": "rgb(94, 129, 172)",
      "toolbar_field_border": "rgb(229, 233, 240)",
      "toolbar_field_highlight": "rgb(94, 129, 172)",
      "tab_loading": "rgb(76, 86, 106)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0e3e8e97-278b-4bd1-9d6f-a644e39d09e4}"
    }
  }
}