Related Clues:

• Witless
• Oversimplify, with "down"
• Dingy
• Hardly vibrant
• Visually dull
• Like Tommy
• Unlikely to catch the eye
• Not colorful
• Waiter's intro
• Olive __: uniform color
• Boring, colorwise
• Word before luck or cluck
• Kind of luck
• Half-baked
• Very silly