多彩

1. Origins, structure, and basic meaning

• Structure: 多彩, read たさい, is a na-adjective meaning rich in variety across materials, expressions, or other features.
• Basic usage: It modifies nouns with な, as in 多彩な素材 and 多彩な表情, and need not refer to literal colors.

2. Common pitfalls and similar expressions

• Diversity beyond color
  • It describes breadth in materials or in facial expression, not only the presence of many literal colors.