Examine source code of BWG Elegance

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "BWG Elegance",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(32, 32, 32)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(202, 202, 202)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgba(34, 34, 34, 0.67)",
      "popup_text": "rgb(177, 174, 174)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dcdcdb43-cb45-4822-a69e-468034f91681}"
    }
  }
}