Late night at the office

So I was out late at the office and realized I only had 30 minutes before midnight and I hadn't taken one shot all day. I've been carrying my camera around everywhere I go lately so I ran to the car and looked for things to shoot. Without much time, or scenery, I had to be very selective. The funny thing is, I took this shot as a funny and ended up loving it. I know, it's just a wall but I like the different textures and love the subtle changes in color. It's hard to think of color at night but there you have it.