[Fallout]

Ok, I can't figure out why people do this. I started googling and found the following possible explanations:

- Fashion. Cos it looks good. Apparently. I assume the riders also wear shell suits?
- To prevent the brake fluid braking down in sunlight. I've never heard this is an issue. If it was, I'm sure there would be a manufacturer solution as it sounds dangerous.
- To catch leaking fluid under hard braking. To my knowledge the reservoir isn't under any pressure, plus it's supposed to have an air tight rubber seal, so this doesn't make sense either.
- To prevent rider distraction, for those who find looking at fluid sloshing about in a bottle more entertaining than a road at high speed.
- To insulate the fluid. This makes no sense because you can't insulate a fluid at atmospheric temperature. I can't imagine braking generates much heat in the fluid, and isn't brake fluid designed not to expand/contract as the temp changes?

So as far as I can tell, it's 100% pointless. Does anyone have a good explanation?