These are all of the colors I could find for Micron pens and the Pilot Iroshizuku series of fountain pen ink. If I’m missing any let me know.
I didn’t really have anything to base the gel pens off of though, so I tried to pick colors that would look good with both a regular gel pen and a glitter gel pen.
Download here: https://file.garden/Zp3hyuAeqTJ1hqo_/Micron_Iro_Gel.kpl