Adjust Lower Hemisphere color?

I’m just wondering if its possible to adjust the lower hemisphere color (in the skylight properties)? It looks terrible when its turned off, but when its on its too black. I was hoping to be able to adjust it to more of a dark grey for a happy medium.
Anyone know how to do this?

I agree with this. Both on and off give an undesirable result, but there are no other options. I’m unsure as to why anyone would want the look of either option as it is right now

I’m hoping it something that they forgot about and have been meaning to come back to. It took me a long while before I discovered it was even something you can adjust but now that I have found it, I really want to change it. Its very odd that its completely locked it at those two options.