OEGetColorParents

OESystem::OEIterBase<OEChem::OEAtomBase> *
  OEGetColorParents(OEChem::OEAtomBase *atom)
OESystem::OEIterBase<const OEChem::OEAtomBase> *
  OEGetColorParents(const OEChem::OEAtomBase *atom)

Color atoms set via a SMARTS match store the matching atoms as parents. This method returns the parent atoms of a given color atom.