Just finished (mostly) this bike - more pics in this thread:

YAP (yet another project): Claud Butler Velox S

This is amber shellac, about 8 coats of a 1-lb cut and 4 coats of something a bit heavier over some thin cotton twill tape got from a fabric store - a left-over bit is tied around the bars to show the change in colour. It took about 2 meters per side - wrapped from the levers to the tops, back down to the end of the drops and then up to the levers again.

The lever clamps were fixed with sticky tape and the bars were wrapped without the levers attached, this makes things MUCH easier, until it's time to get the levers back on the clamps. A bit of squishy foam behind the fixing nut helps keep it away from the bar so the screw in the lever body will grab it, but these still took a bit of swearing.