Related Clues:

• Unlikely to catch the eye
• Not colorful
• Olive __: uniform color
• Boring, colorwise
• *See 61-Across
• Lacking taste
• Not at all bright
• Hardly fascinating
• Like Soviet architecture
• Far from colorful
• Faded and dull
• Far from flashy
• Lacking in color
• Dull, as a color
• Dull and uninteresting