I’m also getting this error with the background in IE:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; InfoPath.2; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; UserABC123; UserABC123)
Timestamp: Tue, 10 Jul 2012 17:27:16 UTC
Message: Could not set the backgroundColor property. Invalid property value.
Line: 155
Char: 466
Code: 0
URI: https://www.google.com/uds/api/search/1.0/289eef681d59caef05fd602d47c986ce/default+en.I.js
Message: Could not set the backgroundColor property. Invalid property value.
Line: 155
Char: 466
Code: 0
URI: https://www.google.com/uds/api/search/1.0/289eef681d59caef05fd602d47c986ce/default+en.I.js