I'll toss a little extra out here on this subject.
Glitter is fun because we can manipulate some of the variables. Glitter is mostly used in a transparent enviroment so we can see it splarkle and reflect bits and pieces of light. Fish like that part too. Its when we put , say this garnet, glitter in a purple , blue or any end of red transparent plastic that things get "interesting. The color of the plastic will determine which portion of the white light spectrum will be absorbed by the glitter or reflect by the glitter. In reality, the garnet glitter as it stands is as jason suggests, a burgandy red....almost a purple. When I put it in plastic with a strong pink coloration, the glitter shows red-red when it sparkles in the sun. What happens with the pinkish tint of the plastic absorbs some of the blue portion of the white light spectrum of the reflected purplish color of the glitter and whats left is stronger on the red side. Purple is made up of red and blue. With the blue being absorbed into the color itself, mostly red gets bounced out for our eyes to see. The pink, being white and red, further enhances the red reflection.
Blue, green and yellow variations of plastic will warp the heck out of blue, green and yellow glitters. It will depend on the intensity of the color of the plastic along with the transparency of the plastic. In blue plastic, some yellow glitters can look green, but green glitter cannot look yellow. Blue glitter in blue will look blue. Flake size and the color value of the glitter will determine what it does in these colors. Greens, ambers and even some transparent browns work very well with green and/or red flake because these colors are all blends and not primary colors.
One of my tricks is to use blue glitter in transparent purple. I have purple glitter that I can, but tblue is a primary color and how it works within the color purple makes the blue much stronger than a purple product. Junebug is typically a smokey purple color with green glitter. There is nothing in the plastic color to filter the light reflected by the green flake, so it really shows up as green in that smokey purple and thats what makes it work so well. In just about every pink color I make, I add a touch of blue glitter. Toss in a smidge of blue hi lites and this pink gets just "alive". Its got depth from the hi lites, its got the internal reflectivity from the sparse glitter and the subtle blue suggestion makes the pink stand out way more than the same pink alone.
I've done jigs for almost fifty years now, starting to make them before I was even in Jr. High with an old river rat neighbor. Over the years I have developed a sense for color and in the long run it probably plays more into why fish hit than action, profile, size, or speed. Working with this plastic is just flat out captivating for me. Being able to pull one, two or three colors into a union that catches the eye is about as rewarding as anything I have done in the world of fishing. Glitter and hi lites....total entertainment.
