I've always wondered why the Back Bay T Stop is covered in purple tile - I can't think of another station that has such a random color scheme.
On a side note - I want to send a huge thanks out to Willy from Bromfield Camera in Downtown Crossing. He was very patient with me while I drooled over the Nikon D40x they had in the store, and then super helpful later in the day when I went back to actually buy one. I love it, and hopefully soon I'll figure out exactly how to use it on more than just the auto settings! If you're ever in Boston and in need of help with camera gear, the guys at Bromfield are very knowledgeable and super nice!