Looks like my clamp diameter is 25.4 mm. So without swapping out the stem, here are some of the options my LBS currently has that interest me:

Origin8 Classique Tour (black, aluminum) - about $18
Origin8 Transit (black) - about $30
Wald 8095 (North Road style, chrome steel) - about $15
Nitto All-Rounder (silver, aluminum) - not sure, but probably too much

Black bars would go better but the Coda Sport, but of course I could always apply black tape to any bar I buy. I've decided that a little rise is OK as long as I can adjust the stem or tilt the grips to compensate.