Having the positions, roles, or colors reversed or exchanged in an alternating pattern, especially in heraldic or artistic designs.
From counterchange + -ed (past participle/adjective). The adjectival form of the design principle of counterchange.
A counterchanged shield in heraldry is sometimes called 'counterchanged or and gules,' and it creates an optical illusion where your eye can't decide which color is foreground and which is background.
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