There's like 4 or 5 shades of multicam, all visibly different from eachother.
Try to buy all your gear from the manufacturer, and get all your BDUs/ACU's/combat clothes in the same fabric, otherwise you'll look silly.
Tru-spec makes good multicam, their 60/40 poly cotton and 65/35 poly cotton is dominantly green. Whereas their 50/50 ripstop is dominantly tan.
Depends where you play.
As seen in this perfect example, everyone's gear is licensed crye multicam, but just different materials, so they come out different colors