in the manual, the type of sun_color is specified as COLOR (BGR).
But as far as i know, COLOR is defined as RGB, so either this is a special case, or a typo.
cheers

get the C# wrapper:
for A7.85.4 and A8.30.4, Version 2.3.9
at http://acknexwrapper2.matthias-auer.net/ or visit the thread