Yeehaa!
A bit breezie but nice for getting an all over tan!
I spent a year in the Sahara wearing a "baby blue don't shoot me beanie" and I can see where that would actually be a useful adaptation as long as you had air superiority!
Being able to hide in the shaded side of a wadi and use the ladder to get some height would work well in that environment.
In the Sahara our "FOO" vehs were originally open topped, no wind screen, diesel engined land rovers (actually Spanish made clones) and we wore UN blue jelabas to protect our heads and faces... very SAS and Rat Patrol or was that Popsky's Private Army?!
We quickly upgraded to enclosed Nissan Patrols painted in the traditional UN white. They were air conditioned not for our comfort but to ensure that the radio and GPS kept working! Toughest little trucks I ever lived out of... and we beat the living crap out of them doing 400 and 600 km patrols every week.
Cheers! Mike