An Interesting Discolored Ffarquhar Station

[Super]

I couldn't resist a mystery so I bought this station and...

I am baffled with a capital 'B' It isn't paint and because the coloring is so all around even and looking at the sharp lines under the roof I have got to believe that this is some kind of coloring and not something atmospheric. Its also very strange that the green plastic has not colored but yet because you can see that they must have been on when whatever happened because its original red under the sign and original tan under the bench seat. The parts have zero smell too.

See this in my hands my only conclusion guess is that this was factory because of the even color and the sharp edges between the two colors. I just don't know.