[Mono-list] new color.cs for inclusion in CVS

[Miguel de Icaza]

> > The unchecked version in the previous post does not really do anything
> > as shift operations are not checked anyways.   
> 
> The unchecked keyword is for the casts, not the shifts.

Casts are not checked either.  The only difference that you will get is
that "unchecked" will disable the compile-time checking for overflows
(that might happen inadvertently), the resulting code is the same
cast-wise.

(Either that, or I have to fix a bug in mcs, so if we can actually pin
point a problem, I would love to hear about this, because then I need to
go fix mcs ;-)

Miguel.