Darken            389 magick/composite.c     composite->red=gamma*Darken(p->red,p->opacity,q->red,q->opacity);
Darken            390 magick/composite.c     composite->green=gamma*Darken(p->green,p->opacity,q->green,q->opacity);
Darken            391 magick/composite.c     composite->blue=gamma*Darken(p->blue,p->opacity,q->blue,q->opacity);
Darken            393 magick/composite.c       composite->index=gamma*Darken(p->index,p->opacity,q->index,q->opacity);