vertical bars (the pale looking bars) which are said to be "breeding bars"
The horizontal lines (thin black/dark lines) are usually associated with stress
In general color is associated to health and mood. A relaxed and docile female may show stress bars (but she is not stressed) and immediately colors up when she sees another female or shows breeding bars when she sees a flirting male.
Sometimes a female shows all the right signs of readiness but when the male bites her, she runs off with stress bars. If she has adequate hiding places where the male couldn't easily get to her, she usually will re approach the male. This is normal.
But if she is constantly being bullied and she is no longer responding to the male - only showing submissive behavior with stress bars, dashing away from time to time - take her out immediately.
If your male is a good father and takes good care of his batch, you can leave him with the fry until ... forever. The longer the male is with the fry the better (IMO). But many breeders 1. don't want to chance a freak sudden change of behavior in the male - changing from good father to fry eater. 2. Wants to re-breed the male as soon as possible. So they take the father out when the fry are free swimming (between 5 - 7 days after eggs laid).