Examine source code of Simple Pink Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Simple Pink Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(251, 165, 205)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(191, 150, 167)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(247, 212, 223)",
      "tab_line": "rgb(244, 61, 125)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(222, 181, 207)",
      "button_background_active": "rgb(255, 39, 144)",
      "tab_loading": "rgb(255, 0, 138)",
      "toolbar_vertical_separator": "rgb(179, 0, 120)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e4790000-643e-44f9-b1b8-5a88d5793e84}"
    }
  }
}