Well, at 18x24", I seem to have fulfilled that goal. Whereas the former pieces were merely decorative, with nothing further to them, with this particular piece I did seek to inject a little more than eye-candy (though there is hopefully plenty of that, too). For this reason, I titled the piece differently than "Black/White," which might've been the easy out. In planning the piece, I intended to emphasize the opposite aspects of the figures, while expressing the equal dignity of all people, as well as their complementary nature. Though typically long on words, I'm rarely long on explanations when it comes to paintings (at least, unsolicited). The above, however, adequately explains all you need to know to explore the piece.
The painting is available, which you can zoom in on, as well as its sketch. But rather than just point you there, below you'll find some tight detail scans. Each box below is an enlargement of 1"sq.
Update 6/2010: The painting was reworked, and you can read more about that here.