Review on Grolsch Beer Bottles - Blue Glass Swing Top/Flip Top Stoppers - Airtight Seal - Ideal for Home Brewing, Alcohol Fermentation, Kombucha Tea, Wine, Homemade Soda - 6-Pack by Julie Clark

These are *not* blue glass bottles. They are blue painted clear glass. See photo. When I received them I was a bit disappointed to see that the blue wasn't quite even, but I didn't pay attention and started washing them. I was then surprised to see small blue bottle stains on the white countertop and on my hands. Upon closer inspection I saw that the blue came off simply by rubbing it with a wet cotton swab. By lightly scratching a small portion of it with a knife, it can be clearly seen that it is in fact clear glass, but painted blue. This is a scam! I'm not sure if they're also colored on the inside (which of course is harder to verify), but I'd be very concerned about using them for drinks.