Color.DesignTokensDecodeError exception (Color v0.12.1)

Raised (or returned) when a Design Tokens (DTCG 2025.10) token cannot be decoded into a Color.* struct.

Has fields:

• :reason — short atom describing the failure (e.g. :unknown_color_space, :missing_field, :bad_components, :bad_alpha, :bad_hex, :not_a_color_token).

• :detail — human-readable context string.