Related Clues:

• Work in oil
• Matisse's mastery
• High school course
• Focus of some exhibits
• Social skill
• Guggenheim display
• Curator's concern
• Piece by Matisse
• Diplomat's asset
• A social grace
• Tony-winning play of 1998
• Lichtenstein's forte
• Collector's collection, perhaps
• '... but is it ___?'
• Delicacy at a state dinner?