Coffeelog Icons inactive/active switch

A shot of an upcoming project called Coffeelog.
You'll get some more information about the product in the next weeks, but here's a first impression:
When adding or editing a coffee you can select which way of preparation is best for it.
There will be 5 for the start and they'll maybe be expanded in future versions. You activate and deactivate each icon by simply tapping on it and then they'll slightly change.
What do you think? Do you recognize which methods are displayed in this shot?