Please excuse my dust while I revamp this section
There are only two genes in this set D, which is full strength of color, and d, which is diluted color. Since the D gene is dominant if the gene set is DD or Dd the rabbit will show full strength of color. The only way to have diluted color is if both genes in the set are d (dd). The dilute will weaken the color in full color rabbits. For example, chestnut dilutes to opal, black dilutes to blue, and chocolate dilutes to lilac. This gene will affect eye color as well.