Examine source code of Dark Velvet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "tron",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(20, 6, 1)",
      "toolbar_text": "rgb(132, 90, 79)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(124, 122, 122)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(253, 215, 211)",
      "tab_line": "rgb(145, 43, 2)",
      "popup": "rgb(204, 200, 199)",
      "popup_text": "rgb(39, 9, 1)",
      "button_background_hover": "rgb(24, 24, 23)",
      "icons": "rgb(142, 74, 74)",
      "ntp_background": "rgb(20, 6, 1)",
      "ntp_text": "rgb(255, 246, 243)",
      "sidebar_border": "rgb(19, 5, 0)",
      "sidebar_highlight_text": "rgb(182, 133, 125)",
      "sidebar_text": "rgb(236, 233, 236)",
      "sidebar": "rgb(40, 12, 1)",
      "tab_loading": "rgb(24, 2, 2)",
      "tab_selected": "rgb(40, 24, 18)",
      "tab_text": "rgb(233, 230, 230)",
      "toolbar_field_border_focus": "rgb(255, 223, 1)",
      "toolbar_field_border": "rgb(137, 54, 2)",
      "toolbar_field_focus": "rgb(20, 6, 1)",
      "toolbar_field_highlight": "rgb(131, 131, 131)",
      "toolbar_field_text_focus": "rgb(247, 245, 244)",
      "toolbar_vertical_separator": "rgb(255, 223, 1)"
    }
  }
}