Changing color of nylon fabrics?

Well, you could always dye it a different colour - assuming that it's not black to start with. The trouble with synthetics is that they don't take a home dye very strongly, it's always a pale modification. Also it will vary with the synthetic used. Is it really Nylon (IIRC a DuPont trade name for a polyamide fibre)? - or some nylon like material. If it is Nylon, don't let it see any acid (it will dissolve...)

Nylon is normally dyed with acid dyes vs. the mordant dyes used for cotton. The cotton dyes do not work well and I am not sure of availability of acid dyes to the general public. Acid dyes attach themselves to the nylon amine end groups.

Chlorine bleach will damage nylon but you might be able to do something with a peroxide bleach as evidenced here:

http://www.>> Natural fabrics (cotton, etc) responds to bleach & dyes to change >> colors.

Nice references, Rolf. Frank