Hi
mlyles & welcome to PSG!
Unfortunately, I have to disagree pretty strongly with your statement that "the borders are the original colors of the photo". I've seen a lot of different soils in my life, and I've seen a lot of faded prints, but I've never seen any soils that are the type of yellow on the edges of the image you posted (when viewed on a color calibrated monitor), even if the scene had been photographed at sunrise or sunset. Yellow crops, sure, but yellow soil ... humm ... quite rare, at least in the USA, LOL.
One of the things that happens to old prints is that if one part of the print has been exposed to sunlight or other bright, blue/UV rich light, the colors in that area shift one way, whereas the colors in the areas that haven't exposed to light shift in a different direction. The first is due to photochemical reactions, the second is due to ordinary, non-photochemical reactions like oxidation, reactions with pollutants like nitric oxides in the air, etc. The two types of reactions act differently on the various dyes in the print.
Anyway, it is obviously your call, but for general appeal / acceptance, I would go for an image whose colors look like most other aerial views of farms. For example, here is a stock photo of a similar farm taken near sunset or sunrise:
http://c8.alamy.com/comp/EEPF6C/aer...uildings-purdy-field-fly-in-august-EEPF6C.jpg
Anyway, let us know your final decision about color, and I'm sure we can tint it to whatever color you like.
Cheers,
Tom M