You can get unique house number plaques by using different color combinations. If you are using a metal or a wooden plaque you can make it unique by selecting precise colors. First of all consider the theme of the outlook that your house have and secondly also make the house number noticeable as well. The prominence can be achieved with the contract grouping of the color. Likewise the background is mostly black or white. Using the contrast colors on black and white background because it will not only make house number attractive, but at the same time it will also be more eye-catching.