Customizing a Cloth Based Shoe?

[celtichoop42]

First, I've never been in this forum so forgive me if this has already been discussed.
I have a pair of trainers that are collecting dust because I don't like the color. It is a cloth based shoe so painting it would be out of the question.

I'm wondering if it would be possible to dye the cloth. Has anybody tried this before?

Furthermore, if it is possible would anybody like to work with me in customizing this pair?