You can use mica powder, certain dyes, and other coloring agents to tint TotalBoat Cast N Turn. However, do not use alcohol ink pigments or any type of water-based dyes, or the resin will not cure properly. When adding tints, always add the desired colorant to the Part A component and mix thoroughly before mixing Part A with Part B. we recommend you do a test sample casting with any colorants before using them in your final project.