47-50th street station, Rockefeller Center, might be the portal to  Top of the Rock, but it is still one of the most dilapidated stations, even by the IND standard. And Independent Subway System stations are some of the most dilapidated stations ever  (thank you, Robert Moses).

Paint is peeling everywhere. On the railings it provides for an interesting history lesson. From what I can tell, the original color was a cheerful yellow, followed by white, followed by orange, followed by black, then white again, then a redder orange, then yellow again and finally black.  Some of the colors might be primers, of course.