OK, I am not sure how much interest there is in this but I don't want this thread to die yet.
Back in the day they had Converse store near where I lived. So I would go in there and you could get Chuck Taylor's for less than $10 all the time. I loved wearing them back then so I picked up few pairs. I even got the flag pair for $4.99.
BUT I hate the look of new Converse, especially the flag ones. So to fix that I throw the shoes in a bucket and put in some Rit Dye (I use the dry stuff because it was cheapest) and then cover with hot tap water.
The water will turn black and the shoes will instantly turn black and you will be thinking "Why the hell did I do this?". Make sure the entire shoe is covered. Sometimes one of the toes will try to poke out but shove it back down. A stick is perfect for this. Move the shoes around in there a few times to get more even coverage. Also you do not have to remove the shoe laces. Oddly they will stay almost bright white. I think they are indestructible.
Let the shoes sit in the bucket for a while. I let it go at least 30 minutes though I believe I have done an hour. I then dump the water out and rinse the shoes off with clear water. The color will still not be as light as it will be when they dry. Then I stick them out on the patio in the sun until they dry. I do not do this in a washer and would not do it at a laundry cause it is rude as shit. The bucket works great. After they are dry they will bleed for a while. You can rinse them off again and it will not matter. Below are before and after pics.
You can use more or less dye and you can do more than one pair at a time. The coverage will not be even but it is good. Wear them a few times before you do this as you may like the original colors.