Unselected object darken. Ability to be able to change how dark it is or better change hue or color

So I recently discovered the unselected darken mode and I really love it but I find it to dark, it would be great to be able to adjust its darkness and or even change the hue or maybe even the color, so maybe it does not need to make the unselected object dark just change a little bit the hue or give a diferent matcap color.
Maybe just like the outline that can be completly customized.