There are, to my knowledge, 382 unlockable dyes (403 if you include the starter dyes).
I would love to be able to group my dyes into private palettes, so i can dye my clothes in a certain scheme without having to dye each piece again.
I’d also love a checklist for dyes; right now, i’ve had to print out a checklist I made (check it out on Reddit) and use good ol’ fashioned pen-and-paper; it’s pretty repetitive after a while.