Examine source code of Onetap Official Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Onetap",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(35, 35, 40)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(25, 25, 29)",
      "tab_background_text": "rgb(203, 203, 203)",
      "toolbar_field": "rgb(45, 48, 55)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(250, 166, 24)",
      "popup": "rgb(35, 35, 40)",
      "popup_text": "rgba(255, 255, 255, 0.9)",
      "tab_loading": "rgb(250, 166, 24)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{066b9ca2-4203-4719-88d2-250f9eecb0be}"
    }
  }
}