Note: Applies only to Enterprise version. Essentials does not allow adding or editing color selections.
Navigate to Settings > Application Setting > Color Palette
You can select a color from the list. Or Click here to create a new color to launch the color picker.
Hover over the chart and the HTML code will populate and the thumbnail will change to that color. Click on the color to select it. If it's not the correct color, click again in the chart to unlock the selector. Single clicking in the chart locks/unlocks the selection. Or you can enter the HTML code in the HTML code box. The # (hashtag / number symbol) is required. If you add your own #html code color, the preview thumbnail will not change, but the correct color will be added to the list.
To search for specific colors and their html codes visit: https://www.w3schools.com/colors/colors_names.asp.
You can edit any color in the existing list by clicking on the name, though can only delete unused colors.