Cute bag! I have been doing the same searches with the same results - zip! I recently bought a light blue nylon twill bag and it really needs a bath! My bag has black leather trim and dark lining so I am very scared to dunk it but that may be the only option. Or I may throw it in the washer. I spent $25 on this bag and that is kind of pricey for my projects - but I liked it a lot! You can see pics at the links below.
Right now I am engrossed in rehabbing several british tan leather bags so I won't be working on my twill bag for awhile, but I will be interested in learning the results of your rehab efforts so please keep us updated. Apparently you are "going where no TPFer has gone before" good luck!
http://forum.purseblog.com/coach-shopping/authenticate-this-coach-694619-367.html#post20690715
http://forum.purseblog.com/coach-shopping/authenticate-this-coach-694619-367.html#post20690726
Oh I remember seeing that post and thinking you were such a brave lady, yet again

