I have the ultimate multi purpose vest. Reversible OD to Black molle vest with P90 pouches, G36/M4 pouches and other random pouches.
Go modular or... well... buy more gear.
If you get a plate carrier is a neutral color, say OD or black and add assorted color pouches to match your environement and loadout (ex: CB, cadpat), you can get away with a minimal loadout that is still versatile. If your vest is covered in pouch, the base color won't show that much.