https://i.gyazo.com/8e73c5f1b5a63ff4349d7989fafb34ab.mp4
As shown here, for whatever reason, some of the particle effects have their color inverted - selecting yellow causes them to be bright blue, red causes cyan, and so on. Does not apply to Bright customization option. Lightness and saturation doesn't change. It's always the first (left?) color selected that gets inverted, second/right color is always correct.