Examine source code of minimal midnight green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "minimal midnight green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(94, 95, 96, 0.22)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(26, 42, 48)",
      "tab_background_text": "rgb(106, 115, 115)",
      "toolbar_field": "rgba(246, 251, 251, 0)",
      "toolbar_field_text": "rgb(122, 128, 136)",
      "tab_line": "rgba(234, 232, 231, 0.1)",
      "popup": "rgb(36, 44, 44)",
      "popup_text": "rgb(255, 255, 255)",
      "icons_attention": "rgb(249, 249, 249)",
      "icons": "rgb(255, 255, 255)",
      "popup_border": "rgba(107, 99, 151, 0)",
      "tab_loading": "rgba(234, 232, 231, 0.1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7f48fd4-5dc4-4c4d-b34b-672f2eed6209}"
    }
  }
}