Anti-white
Example:
Person 1: "What color should we paint the room? I'm thinking white."
Person 2: "You mean the world's most boring color? Nah, I'm anti-white. Maybe let's go for some interesting color for the walls, like literally any color that's not the world's most boring color."
Person 1: "What color should we paint the room? I'm thinking white."
Person 2: "You mean the world's most boring color? Nah, I'm anti-white. Maybe let's go for some interesting color for the walls, like literally any color that's not the world's most boring color."