The last LP from Austin nihilist-punks Spray Paint came in a plain white sleeve that the band simply spray-painted different colors (mine was green and purple). No fuss, no frills, just lean, ruthless minimalism. They’ve stepped up the production values for the forthcoming Clean Blood, Regular Acid — this one has cover art — but musically, they’re just as tough and taut and commanding. “Rest Versus Rust” is a bruised — Wire with a taste for blood, Parquet Courts with brass knuckles and malice where their sense of humor used to be. The guitars twitch and twist and explode, but the vocals remain blank and expressionless — grave orders delivered in a stern tone.