There are many color nuances missing after the last step before full black.
It’s easily to reproduce, just move the slider to total black and then move one step upwards to the next lighter color.
I think it’s a similar problem as with the lights, where the lights are still too bright in the lower settings and the nuances are barely visible otherwise.
Example:
The first pic shows the last color option before total black
There is no color option possible between these two colors, which is a wide step
If we move further up, the nuances are not even noticeable between a single step
