Marker color can be used on sponges effectively and broadens the range of color available to you. Simply color directly on the sponge with your marker, blot the sponge on scrap paper and sponge away. Don't forget to try acrylic paint, too. Squeeze a little on a paper plate and daub lightly with your sponge. Tap off excess on a scrap paper before sponging on your project.
Dye inks work very well with more porous sponges than the cosmetic sponge.
Look for synthetic sponges with lots of little holes rather than the dense surface of the cosmetic type sponge. These sponges when used with dye inks produce an almost airbrushed effect. Sponge with clear embossing ink and then emboss with clear, pearl, or sparkle powders. Makes a great glossy background or accents on stamped images. Sponging with NonSponges Look for textures everywhere that are suitable for sponging with.