Installed Mods: Light Overlay, Mod Menu, OptiFabric & Optifine (no shaders), Xaero's Minimap, Cloth Config, Architectury

The Light Level setting seems to work correctly. However Line Width, and Line Colors have no affect on how the lines appear. Additionally, when a Secondary Light Level is set it, its value seems to override the primary Light Level instead.

The color settings & line width also have no effect on numbers, however I don't know if they're supposed to.

Additionally, setting the Reach level to something high seems to lag the game a lot. However once again I don't know if this is supposed to happen.