My opinion is to use only a total of rgb 1.5 in lighting on any one surface,
and that means any shadowless fill light counts as being shone upon all
surfaces. Unless of course you are trying for an extrordinary effect or
something.
By saying "total" that would be like 4 lights of color rgb 0.125, rgb 0.125,
rgb 0.25, and rgb 1.0 for example.
Bob
