Quote Originally Posted by Diapositivo View Post
Yes but, again, that is really true only for black and white. With colour films, development time is not a variable. Changing development time can lead to colour casts. Not that I ever tried, that's the theory.
Color films can be adjusted too, same principles apply.

Color films are essentially 3-layer B&W films with each layer having sensitivity to different colors. The silver develops just like B&W and help develop the dye image. The bleach step reverses the silver development and the fix washes all the silver away leaving the dye image.

The wild card with color film is color balance can change a bit, but this is rarely a deal killer change in my experience.