The previous agency I worked for used multicam BDU's or a varient there of with black plate carriers. Prior to that it was black vest carriers and olive drab BDU's.
My current department has the darker version of ATACS camo.
Gen 2: 19,22
Gen 2.5: 36
Gen 3: 22, 22RTF2, 23OD, 21SF, 19, 19C, 34, 30