I'll tell ya right now, you can't get the paint off. I have two cases of Red Stripe bottles because I love the old-style stubby shape. I also like the idea of having different shape bottles for my different batches. After much teeth-gnashing, using many solvents, razoring them, and researching on the internet I found out why the labels won't come off. The way they make the labels is they form the bottle, powder some glass into pigment, put the pigmented glass onto the bottle and heat it again. The labels are actually a part of the bottle and can't be removed. It's the same process they use on Corona bottles too.
One of these days I'm going to sand and buff the bottles to make them 'neutral' but for now I pointedly ignore the labels.
BTW, if anyone has a differing opinion on how to remove the labels I would LOVE to hear it!
Gruntingfrog, I think I'll have to force myself to empty those Negro Modelo bottles.