I would try Tower Paint - www.towerpaint.com - I just bought a couple of
cans of paint in Wolfram Gray and their cans have a specially designed spray
tip.  They will fill any size orders from 1 can to 100.  Call them up on
their 800 number and just give them the paint code.  They were very nice and
may be able to help you or else get you something close.

Gerry