MY son and I have an interest in antique tractors and I have seen a few John Deere bikes. They are not very high quality, pretty typical of early 1970s bike boom gas pipe bikes, but still a step above Huffy/Murray. They sold "Stingray" type bikes, ten speeds, three speed, and even a true mixte. The original colors were white, green, or light blue with simple John Deere decals in the green and yellow scheme. Farmers tend to be pretty loyal to there chosen brand of tractor, and John Deere is happy to take advantage of that. If you have never been in a John Deere dealership, they sell everything with the company logo on it from tools to lawn ornaments. And people are happy to pay a premium price for the green paint or leaping Deere logo.
Here is a site that has some info and a picture:http://www.mindspring.com/~dagmara/deere.html