The main device (symbol) in the Kays blazon is the key. The three main tinctures (colors) are or, gules and sable .
Or is the heraldic metal Gold, often shown as a bold, bright yellow colour. It is said to show “Generosity and elevation of the mind” 1. Later heralds, of a more poetic nature liked to refer to it as Topaz, after the gemstone, and, for obvious reasons associated it with the Sun 2. In drawings without colour it is usually represented by many small dots, or by the letter ‘O’ 3.
Gules, the heraldic colour red is very popular, sometimes said to represent “Military Fortitude and Magnanimity”4. It is usually abbreviated as gu and in the days before colour printing was shown in a system known as hatching by vertical lines 5. Although it may look like a French word it is normally pronounced with a hard “g” and may be derived either from the Latin gula (throat) or Arabic gule (rose).6
Sable, the deep black so often found in Heraldry is believed to named from an animal of the marten family know in the middle ages as a Sabellinœ and noted for its very black fur 7. In engravings, when colors cannot be shown it is represented as closely spaced horizontal and vertical lines, and appropriately is thus the darkest form of hatching, as this method is known 8. Although it may seem a sombre tone, and does indeed sometimes denote grief, it is more commonly said to represent Constancy 9.
Although we expect to find fierce creatures and fearsome weapons depicted in a coat of arms this is not always the case – sometimes simple household objects are used 10. The key is a typical example of this. Sometimes these objects were chosen for the familiarity they would have for the obsever, helping them identify the owner, and sometimes they were used because of some association with the owner, or a similarity to the family name. 11 In other cases, Wade suggests that their appearance can be taken to indicate “guardianship and dominion”. 112