はでな is a unique compound reading combining 派 (ha, 'faction') and 手 (te, 'hand'). Misreadings like はてな (unvoiced) or ぱてな (incorrect handakuten) are incorrect. It means flashy, showy, or gaudy, describing something conspicuously colorful, fashionable, or extravagant, often for attention.

「派手な」は、派（ハ）と手（て）を組み合わせた特殊な読み方です。はてな（無濁音）やぱでな（半濁音）は間違い。色彩が鮮やかで人目を引く、華やかな様子を表します。