Wash the countertop surface with water and mild dish soap to remove dirt before painting. Wipe the surface with a towel and let the countertop dry for several hours. Apply painter's tape around the counter edges next to walls to prevent damage.
Sand the counter surface with 150-grit sandpaper, wipe all dust from the surface with a moist towel and let the counter dry. Apply two coats of a laminate flash bond primer to the surface and let it dry for a minimum of four hours after each application. Apply two coats of a semi-gloss paint and let it dry for a minimum of 24 hours after each application. Seal the paint with a clear acrylic.
Add a faux texture to the countertop surface before sealing by applying two contrasting colors over the base color. Using a crumpled piece of paper or sponge creates a marbled look. Test the faux painting application on a piece of wood before applying it to the counter surface.