Yesterday, I accidentally bumped the chandelier in my dining room, and noticed it knocked the trim piece that sits tight to the ceiling loose. That made me realize the existing chandelier didn't look to be held in place very securely, so I took it down, as we intended on replacing it soon anyway. I believe this was due to poor installation by a previous owner and/or a missing washer on the threaded piece that helps hold that in place. Anyway, before buying a new one, I want to ensure two things: that the box I have is suitable for hanging a chandelier up to 50 lbs and secondly, is the tannish colored wire actually a discolored white/neutral wire, or what should the wire opposite the black wire be used for? Please note that one of the pictures shows the state prior to removing the existing chandelier. Thanks for the assistance.