Gum Acoroides (Yacca) – This colorant is obtained from yacca gum that is harvested from Xanthorrhoea plants native to Australia. While yacca is mostly used in the production of fireworks, the resin produces a beautiful red hue when dissolved in alcohol and is added to varnishes and coatings to impart color, especially for wooden instruments).
Dragonsblood – Now collected from various parts of Asia, this resin was originally harvested from the Dracaena cinnabari tree off the coast of Eastern Africa as well as the Canary Islands. Like gum acoroides this red-colored resin has been used as an additive to varnishes dissolved in alcohol (also used on instruments). Dragonsblood has also been used as a stop varnish for etching zinc with nitric acid.
Resina Kamala - This fine powdered resin is collected from the hairs of the fruit collected from a lotus tree found in the Philippines, Asia, and the Middle East. This highly toxic colorant is valued for its intense yellow color and is often used as an additive to varnishes.
Gamboge - The main supply of this yellow resin is from Thailand where the trees are tapped and the resin collected in hollow bamboos. Like resina kamala, this alcohol soluble powder is extremely toxic and is used to color spirit varnishes (often as a ground color for violins).