Colette CL12259 in Tulle, Satin, Cracked Ice. $525 is the Formal Approach best price guarantee for style CL12259 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL12259 comes in the following colors: Dusty Lilac, Magenta, and these sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.