Examine source code of Math Colors Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MathColors",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-031-9570e8d1f7a5f835c92e764693337f43.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(55, 231, 211)",
      "toolbar_text": "rgb(241, 3, 7)",
      "frame": "rgb(243, 33, 64)",
      "tab_background_text": "rgb(112, 157, 238)",
      "toolbar_field": "rgb(236, 15, 19)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(33, 247, 254)",
      "popup": "rgb(22, 54, 75)",
      "popup_text": "rgb(251, 131, 165)",
      "tab_loading": "rgb(33, 247, 254)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{87e2aead-3868-4051-a258-cfaaa803ad6c}"
    }
  }
}