RKT solidify quickly, so adding food coloring to 2 of the 3 batches is an effort in futility. Best bet - melt marshmellows and then divide into 3 containers. Add food coloring directly to the marshmellows to obtain the correct color. DO NOT ADD 4 DROPS OF RED to YELLOW to get YELLOW. Every child knows that red and yellow make ORANGE. 12 drops of yellow food coloring is sufficient for the yellow portion. Save the red drops for the orange section. I again divided each color in pans to solidify, and cut sections and attached to form the triangle, however, rounded the tip to correctly model "candy corn".