I'm fairly sure it's the exact same thing. After all, color film is three layers of black and white film in one. Reversal film is less accurate because it isn't masked. I know that the technicolor printing process where they used dye transfer was restarted in the 90s because the look was popular. Toy Story was one of the movies that utilized it. The cameras are probably in museums or something. You can replicate technicolor for yourself using a panchromatic black and white film and three filters. By shooting three frames, one though a red, green and blue filter, and then combining those in photoshop or using screen printing or something like that, you can create a color image using just black and white film. I did it and it was pretty cool.