Green’s Dictionary of Slang

orange sunshine n.

also orange wedges

(drugs) a variety of LSD that was packaged in bright orange pills.

[US]Current Sl. V:4.
[US]L. Kramer Faggots 301: You name it, somebody’s on it. [...] Blotter, Orange Sunshine, Sweet Pea.
[US]D.E. Miller Bk of Jargon 338: orange sunshine, orange wedges: LSD.
[US]N. McCall Makes Me Wanna Holler (1995) 126: I [...] tried selling chemical drugs — orange sunshine, mescaline, windowpane, purple microdots, quaaludes.
[US]T. Dorsey Florida Roadkill 33: The best drugs from four counties: [...] black beauties, Panama Red, Acapulco Gold, blue cheer, orange sunshine.
[US]ONDCP Street Terms 16: Orange wedges — LSD.