Examine source code of warm light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "warm light",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(234, 233, 219)",
      "toolbar_text": "rgb(198, 114, 42)",
      "frame": "rgb(219, 192, 154)",
      "tab_background_text": "rgb(117, 99, 89)",
      "toolbar_field": "rgb(247, 247, 240)",
      "toolbar_field_text": "rgb(99, 27, 9)",
      "tab_line": "rgb(243, 157, 26)",
      "popup": "rgb(232, 220, 200)",
      "popup_text": "rgb(99, 27, 9)",
      "tab_loading": "rgb(243, 157, 26)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{47aa78b7-7b2e-4dee-8ac8-02720712f681}"
    }
  }
}