I have no problem with minor inconsistencies either. If Vader was pink in ESB and then they decided it would look cooler if he was all grey and old looking for his unmasking in ROTJ, that's fine by me. For the same reaosn I had absolutely no problem with the Emperor looking a bit different in ROTJ than he did in ESB. But George Lucas can't think like that. He either has to alter one of the 2 so they match or make up some lame retcon excuse as to why this inconsistency isn't actaully an inconsistency but rather an intentional artistic decision.