GBE is the Crystal Red used on the Corvette and Cadillac.
http://paintref.com/cgi-bin/colorcod...ystal%20Claret
GLJ appears to be a new grey this year. No cross-reference available for WA810T for years prior to 2012.
http://paintref.com/cgi-bin/colorcod...e=Ashen%20Gray
EDIT: I think this is the correct color shown on the Buick Regal GS...