Tint icing. Tint 1/4 cup white icing black using black icing color. Tint 1 cup white icing light royal blue using Royal Blue icing color. Tint 1 cup each light magenta, light lavender, and light seafoam using color combinations - Combine Rose and Violet to get Light Magenta, Violet and Rose to get Light Lavender, and Kelly Green and Royal blue to get Light Seafoam.