Lightening with age?

Which morphs tend to lighten up with age? I've read about fires doing this, but, are there any more morphs that tend lighten up with age?

Some fires do, I think in some ghosts do too. My friend Pat has a pastave ghost that seems to keep getting lighter as it gets older, I'm convinced it's the ghost gene in it.

yea hypo morphs do, fire, vanilla, lesser/butter. Some of the subtle morphs do supposedly like spectors, deserts look like they do to me.