Colophony is tremendously useful, and is has a wide range of applications within the fields of music, dance, construction, visual art, electronics, medicine, cosmetics, and prestidigitation.

It is an effective tool in the Art of War. Roger Bacon provides instructions for creating Flying Fire with colophony:
Flying Fire (ignis volatilis in aere) may be obtained in the following manner: take one part of colophony, the same of sulphur, and two parts saltpeter.

A fourteenth century recipe for Greek fire called for a mixture containing colophony, sulphur, and Roman glassa to be distilled in an alembic. Bombax was then soaked in the mixture, and the resulting missile was hurled from ballista.

Conversely, it is also a tool in the Art of Healing:

A remedy for scratches taught me by the Herald to the King of France. 4 ounces of virgin wax, 4 ounces of colophony, 2 ounces of incense. Keep each thing separate; and melt the wax, and then put the incense and then the colophony, make a mixture of it and put it onto the sore place.
– Leonardo DaVinci

It can be used for dressing blisters, in drawing salves, and as a balm for bleeding piles.

Its volatile nature and its applications in warfare have scooted colophony into Fire’s jurisdiction, ruled by Mars, though some hold that it is governed by the Sol and Air.

The scent is resinous (surprise!), though a bit green.

Colophony has been known to cause contact dermatitis, and burning this resin in excess may cause occupational asthma. According to the 1888 edition of the American Journal of Pharmacy, powdered colophony may spontaneously combust. Please use caution.

Disclaimer Time! Also, please don’t try to make Greek fire or flying fire or anything else nutty with this info. I don’t want anyone using information that I provide for horrible, horrible crazytimes. I also can’t be responsible for Leonardo DaVinci’s questionable medical advice.

Sol Water. Includes sunflower petal infusion, frankincense essential oil steam distilled from the ligulate florets, angelica root, orange peel (organically grown in-house), and Tincture of the Sun (Paracelsus method).

Carnations from the TAL garden. It corresponds to Sol and used in works of protection, love, pleasure, joy, friendship, healing, and strength.

Heliotrope from the TAL garden. It is a Sol plant – as you may have guessed by the name – and is used in works of healing, wealth, prophecy, and protection.

Lemon blossom from the TAL garden. Depending on who you’re speaking to, lemon is considered either a plant of Sol or Luna. Lemon blossoms, lemon peel, and lemon juice are all used in works of purification, longevity, friendship, joy, and clarity.