Good afternoon. I am new to things "coffee". Am considering the purchase of roaster and getting green beans. Been lurking at all the coffee sites I can locate, and so many different opinions! A question I have about roasting is when beans are roasted to "full city" is there oil on the beans or not? I have looked at many pictures on different sites, but cannot tell. I have read that full city gives an accurate "flavor" of the selected bean. Would appreciate any help given.