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.
As you can see, there is essentially no difference in the metal color. Then compare that with this picture on the left that shows the contrast in color between the natural colors of white gold and platinum. This men's white gold and platinum ring incoporates a combination of both platinum and white gold.