Welcome aboard!
Are you using any colorant in the plastic? If so, what color? Are you sure the glitter is not bleeding into the plastic? I'd try to get the plastic color down before adding anything else, then add the glitter to see if you can get the pink in that color. Pink that faint, as in the factory baits, can be a stickler to make. maybe try a drop of fluorescent pink X2 Colorant to 4 ounces just to see where that goes.