Color Options, Background

I’ve been using rhino since version 3 and I cannot for the life of me remember there being this grayed out black line on black background.

When I have a black object, curve whatever - and I go into a black background, it turns grey. Maybe I just never noticed this??? But this is awesome! I just sometimes confuse it with locked objects :frowning:

Could we do the same thing for WHITE BACKGROUNDS and WHITE things? anything that is white on a white background also gets this grey appearance?

Can you tell me if I could adjust this myself and where ?