Wow we are talking about the same tree. That is something else. I find out about figs less than 5 months ago, scour the internet reading alot, decide to randomly check craigslist and visit the same tree as you.
Were you able to get any riper ones. One of the kids there said sometimes the inside does get red, i tried to find a real ripe one today and just the area near the eye began turning red. I think this one would turn completely red given enough time. I told them i wanted a gallon before I showed up(the first visit), not realizing a tree probly wont have a gallon worth of ripe figs at one time. They were pretty good though. Here are a few pictures from today: http://imgur.com/a/tUuT8
Dennis you dont happen to be a cyclist do you?