The process is pretty simple, if you have a injection mold. shoot the top of the mold with the desired color, let set up. use some alcohol to wipe( to clean oils and insure bonding), the cooled plastisol then take straight colorant and a tiny bit of stabilizer mix the two together, then add a little dot of it (I use a tooth pick) at the desired location on the bait close the mold and shoot the bottom color. I like clear no colorant with a little pearl glitter in it. it takes practice but that is what that process will do. hope this helped. then add eyes and dip in clear plastisol . hang till set up ...24 hrs to completely cure and done.