In advance: Prepare dough and press into pan following pan directions. Insert stick. Bake and cool. Place cookies on cooling grid over waxed paper.
Cover with thinned violet icing; tap to smooth and let set.
For flower center pipe tip 3 outline circle, 1 1/2 in. diameter, in full-strength yellow icing. Fill in with thinned icing in cut parchment bag. Pipe tip 3 outline petals in full-strength violet. Let set.
*Combine Lemon Yellow with Golden Yellow for yellow shown. Combine Violet with Rose for violet shown.