I used printed news paper for a while and the only problem I had was it started turning my snakes bellies gray. I now use packing paper which is pretty much unprinted news paper because I like it when my spider's whites are actually white.
I use printed newspaper and have never had a problem with the colour bleeding onto the scales.
Then again I let it sit in a pile and by the time it is used it can be up to 6 months old.
Maybe if I ever manage to get a BEL or pied I will see it.
dr del
Derek
7 adult Royals (2.5), 1.0 COS Pastel, 1.0 Enchi, 1.1 Lesser platty Royal python, 1.1 Black pastel Royal python, 0.1 Blue eyed leucistic ( Super lesser), 0.1 Piebald Royal python, 1.0 Sinaloan milk snake 1.0 crested gecko and 1 bad case of ETS. no wife, no surprise.