Seems like I follow the majority here. My big items: tent, backpack, sleeping bag, all tend to be quieter colors - forest green, grey, etc. Some darker blues.

Small stuff I like to be a bit brighter: red SAK, yellow FAK. I bought some reflective line a few weeks ago. About a week later, I lost my Leatherman Micra in the lawn outside my girlfriend's place. I found it at 5am (on the way to work), only b/c I knew where it was and it's shiny metal. It now has a small cord fob on it.

If it's critical, it'll have something bright on it.

I do have a few GITD fobs (not tritium) that are sitting around, but maybe I'll add them to the backpack and maybe tent too.