black on aqua white on aqua
black on black white on black
black on blue white on blue
black on fuchsia white on fuchsia
black on gray white on gray
black on green white on green
black on lime white on lime
black on maroon white on maroon
black on navy white on navy
black on olive white on olive
black on purple white on purple
black on red white on red
black on silver white on silver
black on teal white on teal
black on white white on white
black on yellow white on yellow
black on XXX white on XXX