Here's a Tange Levin "mixed" headset, in black:
http://www.biketoolsetc.com/index.cg...id=TA-CDSB/270

They have silver as well, but are out of stock:
http://www.biketoolsetc.com/index.cg...id=TA-CDSC/270

The Tange Levin are nice headsets with a fairly low stack height, and they are inexpensive. I have one on my Palo Alto, and it is smooth and trouble-free.

You might want to give your cups a soaking in a mild Oxalic Acid solution before you go through the trouble of buying/replacing them. I've had excellent results removing rust doing this, and many times parts that looked to be beyond salvage cleaned up bright and shiny.