 The chambered 2007 - 2008 models weighed in at 7.5 lbs and came with a black pickguard and cover with white lettering.Available in Natural(2006-08), Root Beer (2006-07), Trans Amber (2006-07), Trans Black (2006-07), or Trans Red (2006-07) finish.The Robot Les Paul Studio Limited was an upgraded studio with Powertune auto-tuning system.