Juergen Spitzmueller wrote: > Richard Heck wrote: > >> << c.r/255.0 << ',' << c.g/255.0 << ',' << c.b/255.0 > > An alternative would be to require xcolor instead of color (we require this > anyway nowadays) and use \definecolor{shadecolor}{RGB}{}. Then you don't > have to do any calculation.
\providecolor{LyXshadecolor}{RGB}{...} to be save Herbert