Following on from an article in last weeks Sunday Times about Grainne Jordan who reworks famous artists pieces to suit your homes colourscheme...so you could have a Chagall for example in tasteful beige and cream if the real colours were a little too jarring - plus it's a little less expensive than the real artwork. I think this is not a good idea - I'd either buy a decent print if I really wanted one or find an original artwork, not a messed about copy.
this company offers them www.fabulousmasterpieces.co.uk/