Examine source code of Midnight Blue Minimal

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Midnight Blue Minimal",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(32, 45, 53)",
      "toolbar_text": "rgb(171, 179, 226)",
      "frame": "rgb(11, 43, 59)",
      "tab_background_text": "rgb(171, 179, 226)",
      "toolbar_field": "rgb(20, 30, 35)",
      "toolbar_field_text": "rgb(171, 179, 226)",
      "tab_line": "rgb(20, 5, 50)",
      "popup": "rgb(32, 45, 53)",
      "popup_text": "rgb(171, 179, 226)",
      "tab_loading": "rgb(20, 5, 50)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{125fa933-92b1-4ffc-9f0e-b8c59528ff19}"
    }
  }
}