You CAN adjust the brightness of the PFD's and MCP?! Every light adjustment that you have in real you have here. Like 20 or something different reostats. You can adjust all day long without having the exact same lighting twice.. You can also adjust each side separately (And I do have dozens of hours in the 737 cockpit, so don't go there).
So until you actually own the aircraft and know what it's lighting is capable of, get proper documentation of what you think might be improved, this discussion is pointless. Until then this topic is closed.
(click on pic for more real colors)