let windowFrameColorHex = windowFrameColor.toString(16);

* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 _windowFrameColor: null,

 get: function() {
   if (this._windowFrameColor)
     return this._windowFrameColor;

   let windowFrameColor = WindowsRegistry.readRegKey(Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER,
                                                     "Software\\Microsoft\\Windows\\DWM",
                                                     "ColorizationColor");
   // The color returned from the Registry is in decimal form.
   let windowFrameColorHex = windowFrameColor.toString(16);
   // Zero-pad the number just to make sure that it is 8 digits.
   windowFrameColorHex = ("00000000" + windowFrameColorHex).substr(-8);
   let windowFrameColorArray = windowFrameColorHex.match(/../g);
   let [pixelA, pixelR, pixelG, pixelB] = windowFrameColorArray.map(function(val) parseInt(val, 16));

   return this._windowFrameColor = [pixelR, pixelG, pixelB];
 },

Windows 8 and Thunderbird 31. When I start Thunderbird it comes up with menu and tool bar, but panes are blank. The Error console has the following error: TypeError: windowFrameColor is undefined 8/17/2014 5:08:25 PM resource://gre/modules/Windows8WindowFrameColor.jsm Line: 25 When I click on the resource line it opens a file with line 25 highlighted: let windowFrameColorHex = windowFrameColor.toString(16); Here is the content of the file: /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ "use strict"; const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components; this.EXPORTED_SYMBOLS = ["Windows8WindowFrameColor"]; Cu.import("resource://gre/modules/Services.jsm"); Cu.import("resource://gre/modules/XPCOMUtils.jsm"); Cu.import("resource://gre/modules/WindowsRegistry.jsm"); const Windows8WindowFrameColor = { _windowFrameColor: null, get: function() { if (this._windowFrameColor) return this._windowFrameColor; let windowFrameColor = WindowsRegistry.readRegKey(Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER, "Software\\Microsoft\\Windows\\DWM", "ColorizationColor"); // The color returned from the Registry is in decimal form. let windowFrameColorHex = windowFrameColor.toString(16); // Zero-pad the number just to make sure that it is 8 digits. windowFrameColorHex = ("00000000" + windowFrameColorHex).substr(-8); let windowFrameColorArray = windowFrameColorHex.match(/../g); let [pixelA, pixelR, pixelG, pixelB] = windowFrameColorArray.map(function(val) parseInt(val, 16)); return this._windowFrameColor = [pixelR, pixelG, pixelB]; }, }; Can someone help with this?