He has matched paint for me in the past.  He would call his R-M rep.  & give him the pms number, and the rep would give him the recipe. I will mention,  he's been dead nuts on every time.   
So, I'm guessing there must be a cross reference out there somewhere. Unfortunately its Saturday, and I simply cannot wait till Monday (or shall I say, RATHER NOT WAIT...LOL) for a call to R-M.