Related Clues:

• Painter's medium
• Poster color
• Type of paint
• Paint type
• Artist's medium
• Painting medium
• Poster paint
• Quick-drying paint
• Egg-based paint
• Type of water-based paint
• Water-based paint
• With 12 across, a medium
• Harden a medium?
• Anger, a medium sort
• Is that a way to make a medium hard for the artist?