Today, I learned something new...

Orange oil tires?

After going to the local car show today, I found out Yokohama makes tires out of orange oil. Anyone have any experience with these tires? While they don't come in orange, They claim longer tread life, grip, etc.. because of the oil, and the rep said that it costs less than the "equivalent Michelin tire" with those benefits, but is it worth considering? I haven't heard of these before.