A kinky Manhattan lighting designer who was found dead wearing a black latex suit, gas mask and handcuffs suffered an accidental drug overdose, authorities said yesterday.

Toxicology results on Alejandro Bulaevsky, 26, showed he died of acute intoxication from the effects of cocaine, GHB and Xanax.

Bulaevsky was discovered face-down on the floor of his studio apartment after police were called at 5:30 p.m. on April 12.