Examine source code of Flat Violet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Flat Violet",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(53, 49, 59)",
      "toolbar_text": "rgb(206, 206, 206)",
      "frame": "rgb(45, 41, 51)",
      "tab_background_text": "rgb(158, 158, 158)",
      "toolbar_field": "rgb(27, 27, 30)",
      "toolbar_field_text": "rgb(165, 165, 165)",
      "tab_line": "rgb(140, 140, 140)",
      "popup": "rgb(55, 46, 59)",
      "popup_text": "rgb(179, 179, 179)",
      "tab_loading": "rgb(140, 140, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4a6642a-8477-4735-9c23-7691a5242382}"
    }
  }
}