I have here some pictures of the Voyager cases (valid for the HP10c, HP11c, HP12c, HP12c Platinum, HP15c, HP15c LE and HP16c). The new colors Bordeaux and brown are shown here. You can see that the brown color is a very dark one - actually the closest to the original dark brown vinyl case of the original calculators!!
In the first picture, the order is brown - Bordeaux - black, while in the second the order is inverted: black - Bordeaux - brown