Hahaha! XD Okay, you want detail? Here's detail.
I used the boxed Rit fabric dye powder, black, though I take it that the liquid stuff available is just a slightly more pricey and convenient delivery mechanism for the same stuff (a couple of dollars more for half the quantity in a larger package.) I followed the directions for half the packet of dye, boiled a very large pot with about a gallon of water in it, and added the recommended amount of vinegar (apple cider vinegar because that's what I had) and dish detergent to the brew, but not salt, which means the water boiled at the usual temperature of 100-ish° C and probably wouldn't harm the soft plastics of the toy. (I would find later, of course, that it did alter the surface of the plastic slightly and leave it with a slight sheen it hadn't had before, probably owing more to the astringent chemical properties of the brew than the heat itself.)
I made an aluminum foil boat and punched a bunch of holes in the bottom with a kitchen knife, put the legs in the boat, and lowered it into the shadowy waves, hooking it by one edge on the side of the pan to avoid any contact with higher-temperature surfaces, like a double boiler. I descended back into my little workshop to listen to a bit of a Seth Andrews podcast. Five minutes later, I returned to check that everything was still in order, drawing up the boat and peeking at its contents, then returning it to continue to steep; back to Seth.
I returned again in (I think?) another ten or fifteen minutes, hoisted up the makeshift colander, and whisked it across the room to the sink to avoid staining the linoleum; although I didn't dribble on my shirt, either, I decided it had been fortuitous to have worn a black one regardless and concentrate my efforts on saving the floor. (Though I wouldn't realize it until later, I did in fact lose a drop of dye onto the tile; but despite the concentration of the dye, without heat and faced with a waxy, stain-resistant surface, it came up later with a bit of soap and water.)
Rinsing the legs in their little pan, I confirmed that they had dyed to roughly the color I had intended and wouldn't need a second bath, and I peeled them away from the surface of the aluminum, the hot-glue masks of the toes having affixed themselves to the warm metal but staying attached nonetheless to the plastic and repelling any unwanted dye. I peeled away the masks, pleasantly surprised at the contrast between the toes and the hose and more confident now that I had been right to pull them out when I had, washed my hands and the parts vigorously in the sink with dish detergent, and disposed of pot of dye and the aluminum foil boat.
Is that enough detail? XD