Why does my albino hedgehog have orange/brown yellow spots on her quills?

I have had my hedgehog for a little over a year, I got her when she was about 6months-1 year old. Over time she has developed these “spots” on her quills. They are orange/yellow/tan colored and are only near the middle of her body and some on her sides (on her quills) I bathe her twice a week and clean her cage twice a week. There didn’t use to be so much spots on her quills but now there is a lot? Almost like they are spreading? She doesn’t seem ill and she has had them for probably 8 months. Anyone know why? Do they just get these marking as they get older? I cannot find ANYTHING online about these spots. Please help if you can?