Just scored a pair of them and was wondering what is the best way or product to use to get that dirty black look to them?
I just sorta naturally weathered my boots. (I know they’re not the right model, but high tops are really uncomfortable for me).
Here’s a pic of the movie ones:
My best suggestion for the color be the real deal: oil and salt. Just take a tray of motor oil and a sponge and apply the oil to the areas you need them. Then, cut out the tips as seen above with a knife and rub crushed road salt into some of the areas to give it that stressed look.
Just send them to me, I’m a mechanic. I’ll wear them for 3 months and send them back 
I think if you use rit dyes and motor oil (watered down alot to get rid of the smell) that should do the trick on color. And you can use sandpaper on it and a dremel to bring out the steel toe. Hope that helps.
I would definitely go with Mick’s idea, have you ever seen his Life-size? Just SICK!!! 
Thanks for all the tips! I used RIT dye to get that black effect now I’m just trying to figure out how to get the dusty dirt effect that is on the top of those screen used ones.
This effect is a bit harder, and isn’t really permanent, but can be very effective if you don’t really wear the boots anywhere where they’ll become wet. Here’s a pair of boots that I have weathered naturally over time. They have encountered grease, oil, that black powdery runoff from used brake shoes, welding sparks, dirt, and more road salt than I can imagine. The last two are the key to the lighter weathered areas. It looks like dirt, smells like dirt, and feels like dirt then guess what buddy? It’s dirt. Take some dry dirt (maybe just sweep out your garage or something, put the dirt in a bucket and collect it that way), combine that with road salt, add a tiny bit of water, just enough to make the concoction damp, and rub it all over the top of the boots and let it dry. You can easily just take a brush and clear away the areas you don’t want it on.
Or, if you want something much easier and quicker, this works great!
Just tap some out all over the boots, then mist with water. Let that dry, brush it off, and done!