Simon S.
As anyone who has been watching the Royal Institution Lectures this year would know:
Absorbsion of photons of light on a BLACKbird would increase the molecular weight ever so slightly, (Not much, I'll grant you, but all the same), cause thermal expansion of the molecules in the fairing, causing it to become larger, and more unaerodynamic, and increase the temperature of intake air, making the engine less efficient. (See cold air-fast bike posts)
A WHITEbird travelling towards the sun would by the effect of reflection of photons suffer an equal and opposite reaction and be slowed, but with the added boost of the opposite effect from behind.... (Ooh Errr Missus...)
The pretty boy Blue and girly Pink ones unfortunately, suffer another physical affliction, of everyone they encounter either guffawing out loud, or gasping in astonishment at the audacity of the owners, being seen out in daylight, thus setting up air turbulence which makes them unstable in atmospheric eddys, with the result of slowing terminal velocity.
A Titanium
on the other hand would confuse the photons into leaving it well alone, as they wouldn't be able to decide which colour it was, (Silver, Gold, Grey, Beige???) and to fcuk with something that strange looking would be to unsettle the laws of nature, thus allowing to continue on it's way unhindered.
Titanium
s also enjoy the added bonus of pedestrians going "What the Fuuuu........??" as their heads turn to watch you go by, thereby adding a few extra picopuffs (technical term for a movement of air that I just made up!) of tailwind, again boosting your velocity.
I hope this scientific explaination will finally set this whole topic to rest, and that we don't have to go through all this again.
TSI
P.S. Then again, Titanium 'birds nearly always have a gorgeous girl perched on the back, which makes them considerably slower..... Bastid....