Searching for info on where to find a black grenade

I've been trying to find a set be it COD, TMNT or whatever that has a grenade that is not the original style flash grenade that is molded in black. I'm looking for either the pineapple style grenade or the newer flash grenade with the grid pattern on it but molded in black. So far every set I buy thinking the grenade is black based of pictures on the box has always turned out dark grey & stands out on the all black Snake -Eyes custom. At worst I can paint one black but prefer it to be molded in black so as to avoid paint chipping off later. Thank you for any info & your time.