Billy....This is regular pearl and hi lite powder. There's no mess at all really if you brush the powder on your baits using a small soft artist's brush....like you'd see in a grade-school paint set with 8 colors. You can make templates and do all sorts of things with the powder. You don't have to dip the brush into the powder very far...just get a small amount on the tip of the bristles and brush it on.
Once you get the hang of how the powder handles with a brush you can start looking outside of the pearl and hi lite powders sold on the plastics sites and find all sorts of color changing/shifting pearls and unique colors that'll warp your sense of vision. Wild, crazy stuff out there. I just ordered three more color shifting colors of pigment.
But really, brushing the hi lite and pearl pigments on the surface of a bait is just another extension of its intended use and if you don't go crazy with the brush its actually a cleaner process than mixing plastics.
Here's an example of a bait done with the color shifting pearl pigments having been brushed on and then sealed with the clear coat. There are two colors on this one; one on the back and one on the belly. The one on the belly side of this bait goes on like a super fine red glitter and shows zero green.....until its shifted in the light, but you can see the green starting to pop along the bottom edge. Right out of the container it looks like mud, literally.