whats the difference in the white and black ones? http://cgi.ebay.com/STAR-WARS-STORMTROOPER-BLASTER-RIFLE-GUN-MIB-/370481456416?pt=LH_DefaultDomain_0&hash=item56426a6520
also saw this upgrade http://cgi.ebay.com/STORMTROOPER-E11-HASBRO-BLASTER-CONVERSION-SKIN-KIT-MK2-/230576794169?pt=LH_DefaultDomain_0&hash=item35af72aa39