BROOKLYN — Last month, designer Raul Lopez wore a sparkly Supreme hoodie cinched with a wide 90s-era belt as he directed queer Mexican singer San Cha as she rehearsed for art foundation Performance Space’s spring gala. After a series of adjustments on a pitch-black stage, the chanteuse stepped into the spotlight and sang a song in Spanish with thunderous vibrato, wowing onlookers.
The moment could easily have been a metaphor for Lopez’s…