Finally found an orange weapon (shotgun) after beating the last boss. Actually got lucky finding it. It was sitting away from all the other loot between a rock and the boss.
1997 Acura CL (Red w/gray leather - sold)
2007 350Z (Chrome Silver w/orange leather - sold) 2010 335 Xdrive Coupe (black w/red leather - sold)2011 535 Xdrive (Imperial Blue w/oyester leather)