Exhaust tips colour change possible?

[vag12]

I have seen a few cars with metallic blue exhaust tips a few GTR's for example and quite like the look of it, Is this possible to do as a DIY job or is it done in a different way?
Here is a example

[JoeDarKa]

Custom exhaust, wouldnt be a DIY job i dont think

[Jaywoo-GTI]

Here is one option,

http://www.ebay.co.uk/itm/VOLKSWAGON-GOLF-MK5-GTi-STAINLESS-STEEL-TITANIUM-TIPS-CATBACK-EXHAUST-SYSTEM-/350577458653?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Plat_Gen%3AMK+V&hash=item51a00b7ddd

I believe it is all to do with having titanium tips, as it turns blue one it is exposed to extreme heat, (see JonnyC's MK2 TT exhaust)

[vag12]

I have the r32 style tips atm from blue flame, I don't want to really change my exhaust system for it, just wondering if there's any high temp metallic effect spray available for exhausts

[Veee-dubber]

shouldnt imagine so mate... the effect is achieved by heating the metal so it would be very hard to replicate cosmeticly.

[Hedge]

Blue tips are because they are Titanium.

[JoeDarKa]

I dont like the look of them, reminds me of max power! I like the black tips though!