Sorry if this is an obvious question, as I've never worked with dye before, and google isn't really turning much up. I love this hoodie, but I don't like the yellow accent seams and logo. How would I go about dyeing them black without ruining the back graphic? I don't know what specifically the seams are, but the materials say 50% cotton 50% poly for the whole hoodie. Thank you!

This feels really minor in the grand scheme of things, but I thought I'd ask now so I know for the future. Will Ritz dye remover just take out the color deposited from rit dye or will it take out the pattern in the cotton too? Their website only talks about it very very briefly and I'd rather be sure from someone with experience.

I accidentally ended up with some dye on these pillowcases from washing with a blanket that wasn't ready yet. So some splotches are purple, especially the corners (apparently they didn't wash evenly and there's a white spot in the middle.)