The phrase "painted town red" describes a wild and reckless night out on the town, often marked by overindulgence in alcohol and partying. Antonyms for this phrase would be anything that connotes calmness and restraint, such as "quiet night in," "low-key evening," or "relaxed gathering." These phrases imply a more subdued and mature approach to socializing, where the focus is on enjoying the company of close friends and engaging in low-key activities rather than going all out and behaving recklessly. While painting the town red can be fun every now and then, it certainly isn't for everyone, and there are many other ways to enjoy a night out that don't involve excess or risk-taking.