There is also a view that originally existed basic white, black, blue and red colors. Later they added extra: yellow, green and purple. White and yellow are used simultaneously with silver and gold, and then were replaced by metal and disappeared as independent.
In addition, the tincture included a special type of heraldic colors - ermine and squirrel fur.
Tincture, applied to the stamp body, could symbolize the abundance of color (yellow), modesty, education or sorrow (Black), grandeur and beauty (blue or blue), courage (red), hope (green), dignity (purple), wealth and loyalty (gold), innocence (silver), highborn (ermine). But more color in heraldry represents grass, sky, shed blood, etc.