Are you looking for an automotive paint code to match or Dinky's own color and #.
From what I remember reading about restorations and repainting the components of the paint used are no longer allowed to be used in most places so the exact color of the factory applied paints can no longer be exactly reproduced only closely approximated. Try the dinkyclub.com and see if they have they original name and # listed.
You may also be able to go to an automotive paint service and get a small batch mixed up for you based on a scan of the remaining paint surface. Or the closest current factory color available to the scan results - which maybe cheaper..