cacochromy [from Greek κακός “bad” plus χρῶμα “color”] /kə-KOK-rah-mee/ Similar to cacophony (from Greek φωνή “sound”), which is a mix of discordant sounds, cacochromy is a mix of discordant colors.

EX: “His clothes were a cacochromy: lime green deck shoes with gray socks, powder blue slacks, dark purple t-shirt, and a sunshine yellow jacket.”