What figurative language is found in a million shades of gray?

The phrase "a million shades of gray" employs imagery and hyperbole as forms of figurative language. Imagery evokes a vivid mental picture of a wide range of gray tones, suggesting complexity and nuance. Hyperbole exaggerates the number of shades to emphasize the vastness of variations and emotions, often implying that situations are not simply black and white but filled with subtleties.