Yes, sometimes buoyancy compensators for women come in pink and purple, but color is not the main difference between a standard buoyancy compensator (BC) and one designed specifically for a woman.
Buoyancy compensators designed for women are cut to fit women's smaller frames. Many feature bodice-like closures, such as the Aqualung Pearl i3, which keep the BC from sliding off a diver's shoulders without the need for a potentially uncomfortable chest strap.
Women's buoyancy compensators may also have less lift than standard BCs to accommodate for women's smaller sizes.
