It includes some xcf files. So you can create some other variations.
Source:
http://opengameart.org/content/potion-bottles
Comments
These are cute hand drawn potions. Thanks for including the layers file. I'm using them in the AnyRPG Engine.
I've featured this asset in a livestream at https://youtu.be/Kbe1AbhMR3c ,credited you on the contributors page at https://www.anyrpg.org/contributors/ , and added you to the in-engine credits.