As you get to know the colors in your watercolor palette, you will learn the way that colors mix and blend. One way to explore this rigorously is to create a color combination grid with each of your colors on the X and Y axes and the combination of the row colors in each cell in the body of the chart. In this example, full strength colors occupy the top right side of the chart while tints (diluted with water) fill out the bottom. It was made with all the colors on the custom watercolor palette. Click image to enlarge.