Examine source code of Simple Flat Clean Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Simple Flat Clean Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(205, 205, 205)",
      "toolbar_text": "rgb(136, 141, 129)",
      "frame": "rgb(217, 214, 214)",
      "tab_background_text": "rgb(56, 46, 130)",
      "toolbar_field": "rgba(0, 0, 0, 0.7)",
      "toolbar_field_text": "rgb(222, 222, 222)",
      "tab_line": "rgb(96, 96, 7)",
      "popup": "rgb(184, 184, 184)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(96, 96, 7)"
    }
  }
}