Examine source code of Brick and Foliage

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Brick and Foliage",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-009-f069b97f439938a011297c84464f0df6.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(248, 236, 227)",
      "toolbar_text": "rgb(6, 69, 53)",
      "frame": "rgb(168, 63, 51)",
      "tab_background_text": "rgb(255, 249, 246)",
      "toolbar_field": "rgb(255, 249, 246)",
      "toolbar_field_text": "rgb(6, 69, 53)",
      "tab_line": "rgb(255, 249, 246)",
      "popup": "rgb(168, 63, 51)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 249, 246)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fd4807f4-ae64-4f95-872a-d4239fbfc3b2}"
    }
  }
}