Removing Scuff Marks on Shoes

Try Dawn dish detergent. It got off ink marks on my leather purse.

Nail polish remover on a cotton ball.

IF they are NOT a cloth or suede you could try a pencil eraser and if that doesn't work try a Mr Clean Magic Eraser (or the generic equivalent). Rub very lightly with the damp eraser though, because it can remove the color as well.