You know what they say: Never miss a Sunday show donut. Tonight’s donut flavor is among the most superior donuts ever made: Red velvet. Yes, a wonderful red velvety cake donut with some cream cheese frosting, drowned in red sugar As for cover options: How about a whole lot of Velvet Underground? “Little Red Corvette”? Either way, this is the best donut flavor Phish has offered thus far so…