Quarks are typically described in terms of their three fundamental properties, known as color charge, electric charge, and mass. However, it's important to note that the term "color charge" in particle physics does not have a direct relation to the colors we perceive in everyday life. Instead, it is a property associated with the strong nuclear force, which is responsible for binding quarks together to form particles such as protons and neutrons.
The concept of "color charge" in particle physics refers to a property that comes in three different states or "colors": red, blue, and green. These colors are just labels and have no direct connection to the colors we see in the visible spectrum. Quarks can have a combination of these color charges, such as red, antired, green, antigreen, blue, or antiblue. However, these properties are not visual or perceptual characteristics but rather a part of the mathematical framework used to describe the behavior of quarks and the strong nuclear force.
So, to summarize, a "green quark" does not have a specific definition within particle physics, and the term "color charge" associated with quarks is unrelated to the colors we perceive in our everyday lives.