What would’ve happened if the legendary Go-Gos had kept partying on mushrooms in the Palm Springs desert back in 1984, as recounted in their documentary, before recording their big commercial follow-up? Apart from seeing a Lou Reed-looking alien or two, they likely would have ventured into a more psychedelic musical direction, and possibly come out sounding something like California band La Luz, who delivered a memorable show to a packed house at Richmond Music Hall on Saturday, Oct. 5.