The dynamometer has a braking torque regulator-the Power Absorption Unit (PAU) is configured to provide a set braking force torque load, while the prime mover is configured to operate at whatever throttle opening, fuel delivery rate, or any other variable it is desired to test.
As such, metallic gold is a good choice for brightening neutral, nature-inspired color schemes. The trick is to pair metallic gold with warm, deep-tone neutrals, such as charcoal or slate gray, chocolate and coffee browns, dark sage and olive greens, and deep tan and beige.
White gold is commonly used for wedding rings in the USA. Addition of some copper gives rose gold, a soft pink colour. Remarkably other colours such as purple (a gold:aluminium alloy), blue (a gold:indium alloy) and even black (a gold:cobalt alloy) may be formed. Gold is usually alloyed in jewellery to give it more strength, and the term carat describes the amount of gold present (24 carats is pure gold). It is estimated that all the gold in the world, so far refined, could be placed in a single cube 60 ft. on a side.