mgafb_color_replicate
fcol = mgafb_color_replicate(sc, color);
static uint32_t mgafb_color_replicate(struct mgafb_softc *, uint32_t);
fcol = mgafb_color_replicate(sc, (uint32_t)ri->ri_devcmap[fg]);
bcol = mgafb_color_replicate(sc, (uint32_t)ri->ri_devcmap[bg]);