There is a new option in WatchOS 8 regarding ALL colors: At the very end of the available colors (roll down), there is a + sign. Initially it hides all colors from previous "seasons". All previous colours can be added there - or removed from the color selection, in case you do not want a particular color. Smart solution, as long as you know, what it does. As i never RTFM, I had to play around there first. 😎