Examine source code of Cozy room

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cozy room",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-039-717a66ba4d455686088c80f391cb3264.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(231, 215, 193)",
      "toolbar_text": "rgb(140, 28, 19)",
      "frame": "rgb(167, 138, 127)",
      "tab_background_text": "rgb(231, 215, 193)",
      "toolbar_field": "rgb(115, 87, 81)",
      "toolbar_field_text": "rgb(167, 138, 127)",
      "tab_line": "rgb(201, 69, 69)",
      "popup": "rgb(231, 215, 193)",
      "popup_text": "rgb(140, 28, 19)",
      "ntp_background": "rgb(167, 138, 127)",
      "ntp_text": "rgb(140, 28, 19)",
      "popup_border": "rgb(201, 69, 69)",
      "toolbar_field_border": "rgb(201, 69, 69)",
      "tab_loading": "rgb(201, 69, 69)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a3c3d019-61d1-4762-b623-aa4f2f08f1c1}"
    }
  }
}