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. Sig 226, H&K USP .45 OD. Sig Scorpion 1911.
Gen 3: 22, 22RTF2, 23OD, 21SF, 19, 19C, 19, 38, 42