I was looking to get a full system with titanium headers (Akrapovic Evo) because I love how titanium system's blue, and I also like the fact that they're the lightest material to manufacture the exhaust out of. My question is, though, do they stain like the stainless steal factory headers do? I don't want them to get all crusty looking if I happen to get caught in the rain like the factory headers did. I want them to keep looking like a solid silver/blue color throughout their lifetime. Anyone know if this is the case?