Name: Aimee
Message: Hello! I'm wondering if you know how to dye aplix/velcro? I've been told that it works with RIT dye, but I want something that is colorfast. Thanks for any help!

Velcro is made of woven nylon (reference), which means that it should be possible to dye Velcro with acid dyes.

It is actually not a bad idea at all to use Rit or other all-purpose dye for this purpose. You are familiar with the tendency of all-purpose dye to fade when used to dye cotton, because the cotton dye used as part of all-purpose dye is a non-colorfast type called direct dye. All-purpose dye also contains a type of dye called acid dye, which just washes right out of cotton. Since acid dye works well on nylon, and is a rather more satisfactory product than direct dye, all-purpose dye works better on nylon than it does on cotton.

All-purpose dye is expensive per pound of material to be dyed - direct dye alone costs a mere fraction per unit of fabric, when purchased from a company such as http://www.prochemical.com. However, if you are dyeing very small quantities, less than a pound of material, as seems likely, you should find that the Rit brand all-purpose dye that can be found in many stores is not too expensive to use.