Brian, Thanks..... I had the same idea about the white shirts keeping you cooler in the sun. I will probably go with the white shirts, and blue dickies pants. as you hit the nail on the head with the pants getting dirty. I bought some white painters pants, and they are dirty by days end. As for hydration..... I Keep a big cube cooler with wheels (Walmart $29.00) in the back of the truck. I keep bottled water and gatorade on ice all the time. I drink 2 gatorades to help with hydration, and water most of the day.