Tinted Glass Bottles that hide the potion effect to troll your friends!

When you craft a bottle out of tinted glass you get a tinted glass bottle. When you brew a potion with a tgb you get a potion called "tinted potion" which does not show the effect.

Dare your friend to trink one, so they find out what you really think of them.

Also a neat way to hide your potions, so the thief gets to drink a bunch of instand damage potions before finding out which ones are the real ones.