Divide remaining cup icing into four portions. Combine Royal Blue and Violet icing colors to get blue color shown. Combine Lemon Yellow and Golden Yellow icing colors to get yellow color shown. Using Rose icing color, tint one portion pink. Using Kelly Green icing color, tint one portion green. Tint remaining two portions blue and yellow using color combinations provided.
Prepare four decorating bags with tip 3; fill separately with pink, green, blue and yellow icing. Pipe messages and designs on cookies.