Each LED device has its own Brightness control at the top of its page, so a bright DDU and a subtle set of eyebrows can coexist.

Three things worth knowing:

• Idle brightness is separate. The Idle Mode and Idle RPMs tabs have their own brightness, so the rig can be dimmer on the desktop than it is on track.
• Dim Effect. Steering wheel and button box themes have a Dim Effect option that softens the idle theme without changing your racing brightness.
• Hotkeys. Every device's Hotkeys tab has Increase Brightness and Decrease Brightness, which you can map to a wheel or button box input and use mid session.

If a device looks dimmer than the rest, check that its own brightness has not been lowered, and check whether you are seeing the idle brightness rather than the racing one.