What were they thinking

OK here's a mundane one for you. I have to pass through an underpass to get to the opposite platform each day at Carshalton Station. Standard brick, damp sort of thing.

So which genius thought it would be money well spent to paint it white to presumably cheer the place up? Within a mere 1 day it had attracted it's first graffiti so already looks 10 times worse than it did before. Oh & this is presumably the same people who wont be giving us a refund for there being no public transport on Monday on the basis it will cost too much money.

I'll try to update this with a pic soon.