2013 is the first year for the 316RL. Sometimes they make changes mid year with no announcement. If you see a trailer on a dealers lot but order one with a different color interior, it may come delivered with some differances 2 months later. I know last year some time they switched from white propane tank covers to brown ones (same model, same year). The year before they went from a white fiberglass front to the current brown ones. That trailer should be pretty much what you saw, but there may be some differances. That being said that 316Rl is a cool trailer. We have a 2012 320BH and could not be happier. No problems.
Good luck and by the way
to the forum.