Another coat of epoxy, with or without pigment, can be applied over cured epoxy. Clean the surface with soap and warm water, sand it with 80-grit sandpaper, remove the sanding residue with a rag dampened with acetone or denatured alcohol, and then apply the epoxy.

TotalBoat Pigment Dispersions can be used to pigment the epoxy after the resin and hardener components have been thoroughly blended together.