The first Dept I was with used woodland camo BDu's for all training exercises, and black for the real deal....the only thing I was told is the woodland camo wouldn't show grass and other stains received during training....didn't really make a whole lotta sense to me, but I was just the new guy....
My current Dept. is part of the county ASORT team and they wear slate grey BDU's with black duty gear and plate carriers...
NRA-Line of Duty member
G22- Gen 2.5/ G23- Gen 3/ G27 & G19- Gen 4