I have done the same thing Don has mentioned above. Save one thing.
After you put the water based black paint on you can take a Q-tip and dampen it with Isopropyl Alcohol. Gently rub the gauges with the q-tip to remove the black from the gauges until the white shows through.
This works really well when the black is still a little wet. Just don't put too much pressure on the q-tip or you may take more off than you intend to.
Hope this helps.
Paul