I have worn both in gold in Albuquerque with Mike and black in Texas and I perfered the black. The black has a little visibility advantage due to the contrast of the black and the reflective strips. Also the guys tend to keep black gear clean. Nothing scientific here but I like the black gear.
Darin, I have worn everything from cotton duck to yellow, gold and black. We are currently in black gear and have been and will be in the future.If you are turned out in all your gear in 90 degrees, you will be hot Brother! Black gear has become prefered by many departments in my county. The gear we are in has stood up to everything we throw at it. To echo Chief Halton, nothing scientific, I'm staying with my Black Gear.
I have worn white, tan and black over the years. I call bull on those who say there is no difference. Black gear in full sun- say working an MVA- is noticeably hotter. I suspect that those that say otherwise have a personal bias to the look.
Is that reason to not chose black? For me no. I prefer the black gear for a number of reasons, despite the fact that in some conditions it can crank up the thermostat...
I have worn tan and black gear.
Black gear: Feels hotter in the summer. Shows heat damage. Looks clean but is it?
Tan gear: still hot in summer, Looks dirty even after being cleaned