Examine source code of LOTR Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "LOTR Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.08)",
      "toolbar_text": "rgba(255, 255, 255, 0.71)",
      "frame": "rgb(43, 46, 48)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 250, 251, 0.29)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(148, 76, 105)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(148, 76, 105)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0579554-5a18-4222-9f2b-6ed8baf94583}"
    }
  }
}