Dr. Lecter
Contributor
Maybe it's because I dive a lot in low light and low viz, but I feel that bright colors have a safety function in diving. A buddy diving a black dry suit with a black wing and black fins and dull gray tanks disappears into the murk much faster than someone with bright yellow fins or white tanks. (I remember a very low viz dive a year or so ago when the second team told me the only way we stayed together was because they could see my yellow fins!) If I'm entangled or disabled or in any way in need of help, I want to be VISIBLE. Even if it's a body recovery, I'd rather be seen. Thinking that color in gear somehow reduces its functionality seems a very strange idea to me.
Must be a buddy/team diver thing. Maybe you should work to get GUE to mandate diving in bright colors only--the brighter and more garish, the [-]better [/-]safer

As someone who primarialy dives solo, whether I'm diving alone or not, I'm not concerned with seeing or being seen. The body recovery angle strikes me as being so silly as to not merit a response, but to each their own.