Examine source code of Cherry Midnight

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cherry Midnight",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 34, 46)",
      "toolbar_text": "rgb(222, 222, 239)",
      "frame": "rgb(16, 16, 23)",
      "tab_background_text": "rgb(189, 195, 199)",
      "toolbar_field": "rgb(16, 16, 23)",
      "toolbar_field_text": "rgb(222, 222, 239)",
      "tab_line": "rgb(31, 34, 46)",
      "popup": "rgb(35, 35, 47)",
      "popup_text": "rgb(222, 222, 239)",
      "button_background_active": "rgba(16, 16, 23, 0.5)",
      "button_background_hover": "rgba(255, 86, 142, 0.25)",
      "popup_border": "rgb(31, 34, 46)",
      "popup_highlight": "rgba(255, 86, 142, 0.31)",
      "sidebar_border": "rgb(31, 34, 46)",
      "sidebar_highlight": "rgba(255, 86, 142, 0.25)",
      "sidebar": "rgb(31, 34, 46)",
      "toolbar_field_border_focus": "rgba(255, 86, 142, 0.31)",
      "toolbar_field_border": "rgb(31, 34, 46)",
      "toolbar_field_separator": "rgba(255, 86, 142, 0.52)",
      "toolbar_top_separator": "rgb(31, 34, 46)",
      "tab_loading": "rgb(31, 34, 46)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4146de52-6ae4-4b28-a875-9e45e4e68ded}"
    }
  }
}