Introducing Quarks: The building blocks of Atoms, and the inhabitants of the Theoretical Zones.
Green Quarks are the fastest Quark observable by scientific instrument. When paired with Blue Quarks, they can move dizzyingly fast, in some cases faster than light.
There are no Green Quark Atoms that have been fully observed at this time.
While there are an infinite number of Atoms that can be made with various combinations of Quarks, The amount of different Quarks is actually quite limited.