Transition buttons colored with various colors

It would be quite useful to be able to change the colors of the transition buttons within the form. Right now, the first option is green colored while the rest pop up from a dropdown list and are always with a white background. If these transitions include decisions like (proceed with the workflows or cancel it) coloring the buttons would help the users (f.e. proceed green and cancel red). The best would be to allow some flexibity at the form configurator to decide.