What happens if Sabres wear red-and-black Goathead uniforms against NHL rules in Game 7

The Buffalo Sabres are generating significant buzz ahead of what is described as the biggest game they have played in two decades, reportedly a Game 7. There is discussion around the team potentially wearing their iconic red-and-black 'Goathead' uniforms, which may conflict with NHL uniform regulations. The situation raises questions about what penalties or consequences the franchise could face if they violate league rules by wearing the throwback jerseys.