What are tinctures?

Some articles on tinctures, tincture:

Hatching System - Additional Tinctures
... book, presenting hatching methods for some additional tinctures as well ... Some additional tinctures already appeared in the theory of heraldry in the early 15th century, which were then soon applied in practice ... introduced hatching for some other tinctures such as Umbra (sienne, earth-color), Rotgelb (yellow-red, orange), Stahlblau (steel blue) and Blutfarbe (sanguine) ...
Heraldry - Components and Rules - Shield and Lozenge - Tinctures
... Tinctures are the colors, metals, and furs used in heraldry, though the depiction of charges in their natural colors or "proper" are also regarded as tinctures, the latter distinct from any color that such a depiction ... so the most important convention of heraldry is the rule of tincture ... visibility, metals (generally lighter tinctures) must never be placed on metals, and colors (generally darker tinctures) must never be placed on colors ...
Spanish Heraldry - Heraldic Regulation - Tinctures
... Tincture Heraldic name Spanish name Metals Gold/Yellow Or Oro Silver/White Argent Argén or Plata Colours Blue Azure Azur Red Gules Gules Purple Purpure P ...
Tricking (heraldry) - Origin - The Gemstone-planetary Blason
... Blason des Couleurs (1414), Courtois developed a heraldic system consisting of the tinctures, planets and carbuncles (furthermore, the virtues, metals, months, the zodiac, and ... was familiar with the Etymologies of Isidore of Seville, and also he gave the names of the tinctures in Greek ... applied in his 1654 book titled Aspilogia the symbols of the planets to designate tinctures (presented in the table) ...
Tinctorial
... A tincture is typically an alcoholic extract of plant or animal material or solution of such or of a low volatility substance (such as iodine and mercurochrome) ... To qualify as an alcoholic tincture, the extract should have an ethanol percentage of at least 40–60% or 80–120 proof ... Sometimes even a 90% or 180 proof tincture is achieved ...