Okay, so I went and grabbed me some isopropynol, about 30 cotton buds and set aside 40 minutes.

This is what I managed to acheive:











There are still some residual bits in seams and the like, although I managed to scrape almost all of that out. The only real relic is on the rear left fender where some of the spray just didn't to move - I did manage to move most of it in this location, however.