Related Clues:

• Gradation of color
• Salon option
• Darken somewhat
• Control knob on old color TVs
• Windshield coloring
• Painting subtlety
• Clue to this puzzle's theme
• Decorator’s decision
• Hair treatment
• Violet or lavender
• Spectral property
• Crayola gradation
• Lemon or orange
• Teal, for one
• -- and cry