That is a little less marked and visible, but I need always to have a fixed low (0min) and high (480min) Bounds.
I am aware that to have a gradient color, the change between two range must occur a little earlier of the bound, but I notized that with a segment of one hour, the change does it in the middle of the range, and in some situations, like my first image, the result is a little misleading.
I just wanted to point this out.
Greetings,
Sonny