Examine source code of Midnight Red

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Midnight Red",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(63, 11, 11)",
      "toolbar_text": "rgb(226, 175, 175)",
      "frame": "rgb(45, 22, 22)",
      "tab_background_text": "rgb(185, 105, 98)",
      "toolbar_field": "rgb(49, 2, 3)",
      "toolbar_field_text": "rgb(237, 220, 220)",
      "tab_line": "rgb(106, 47, 38)",
      "popup": "rgb(68, 22, 22)",
      "popup_text": "rgb(181, 67, 67)",
      "tab_loading": "rgb(106, 47, 38)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1e7beffd-9bb1-4bac-9e7b-c60ac94daef9}"
    }
  }
}