That's not really an alternative to rendering fullbright (entityfx 1), it's a solution to a different problem (fullbright not being bright enough). If he's not rendering fullbright then the level is being lit by the ambient light value rather than having the lightmap alone govern its appearence - I tend towards fixing the cause of a problem rather than the result as it generally leaves less to come back and bite you on the ass in future.
If rendering is as intended and it's still too washed out them gamma is perfect, though controls (with a decent range) for the user are polite.
If rendering is as intended and it's still too washed out them gamma is perfect, though controls (with a decent range) for the user are polite.