Colette CL8170 dresses are offered in Steel Blue. $599 is the Formal Approach best price guarantee for style CL8170 by Colette. Shop with confidence, Formal Approach is an authorized Colette prom dress store. Colette CL8170 is offered in sizes: 00, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.