I have done some experiments with WSF dyeing using fabric/textile
dye.
Googling tell's me; There are multiple variant, "cold-wash", "all purpose" (union) and "permanent fabric dye" (reactive) Nylon seems to work well with the union type dyes.
In the Netherlands I can only find "Dylon", and I use the small tin cans which need added salt. Seems awfully familiar to whatI've seen of RIT?
I just put an old pan on the stove and let the whole mixture simmer slowly according to the instructions that came with the dye.
(while heavily stirring)
For more complex objects, it's hard to get an even color, but I've have been way too impatient in my experiments (too many objects at once, not long enough, too long)
So far, it seems to be a trade-off between even result and dark or light and uneven.
As WSF has a tendency to absorb the dye like crazy.
So yellow quickly turns orange. Black well, gives a nice deep black
I expect most colors to be a lot darker on WSF.
But I definitely need to refine my procedures
Cheers.