Their yellows fade a bit, but the lavender stays pretty lavender. Check out pics 2 and 3 at WOBP: http://www.worldofballpythons.com/mo...vender-albino/
It's almost exactly what my 3yr lav albino male looks like. His lavender color is about the same shade of lavender on my baby banana. Yellows, obviously, are much more faded. Personally, I think the lavender albino color ages better than banana coloring.