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.
Professional/Artist Watercolors. Professional or Artist Watercolors contain a full pigment load, suspended in a binder, generally natural gum arabic. Conventional watercolors are sold in moist form, in a tube, and are thinned and mixed on a dish or palette.