Coloring in

Most pens aren't really the best choice for coloring materials. I usually color in with colored pencils. I'd recommend crayons, colored pencils, or watercolor. As for markers... I've never actually tried coloring in with markers before. I could try, but mine are thick and watery and aren't the best for coloring. If you want to color in with markers, color in using markers that are good for coloring and aren't too watery or thick.