I started out with these canvas boots from Man of War. Great design, affordable...and comfy, too! The problem: they were snow-white, and Boba's boots are the darkest part of his costume.
I found a lot of methods for painting and weathering these, online. Most people just use acrylic paint -- but I wanted the shoes to breathe as much as possible while being worn. Paint would completely seal the boot's air flow. I didn't want smelly, sweaty boots if I ever decide to wear the costume.
My solution was to dye the boots with watered-down RIT Black. Aiming for a charcoal gray base color. Here's how they came out:
The center stripe down each boot is supposed to be almost black, and there is a lot of grime and shading. I had to resort to SOME acrylic paint.
I watered down Liquitex Mars Black and dry-brushed it into the boots while they were still slightly damp. After they dried, I added a small layer of brown grime with Testor's Rust, and added the aluminum toe-spikes. Finally, I scuffed them up with some sandpaper.
And we have finished boots!