Identifying the type of mint. Just to confuse the picture even more, there is a chocolate mint which has purplish stolons. There are, in fact, hundreds of varieties of mint, some of which are commercially grown for oil extraction or for leaf drying, and a lot of which haven't even been given names, being known as Mint 341, etc.
Simply put, watercolor is a painting compound using water-soluble pigments that are either transparent or opaque. Because of the medium itself as well as the paper to which it is applied, watercolor is frequently thought of as a fugitive medium.
Note from the author: when I was in art school, a teacher referred to gouache as being watercolor plus chalk.. That does oversimplify it a bit, but it gets the basic point across. Sometimes referred to as opaque watercolor, gouache starts out similarly to watercolor.