Good luck with the suggestion.
3-4 years back now, CCP discussed adding a slider into the game that would allow players to adjust the brightness of the client.
There were generally, a lot of complaints back then that the client was too dark.
Since then, CCP have updated the rendering engine and introduced new features like physically based rendering, additional features in the fragment shaders to introduce reflections, etc.
To assist with seeing the effects of these changes, it seems the devs decided to just add more light sources to the game, and particularly bright nebula, but seem to have decided not to provide the ability for players to adjust the intensity.
When the changes were first made, there were a lot of complaints then about things being too bright, but CCP seem to have taken the approach of adjusting individual cases, not the client as a whole.
But +1 anyway, though I think it’s pushing water uphill to ask.