To select the fill color for a filled annotation, right-click on the annotation. In the contextual annotation box, select the Fill Color.

To display more fill colors, select the color in the Fill Color field. The Fill Color box expands to display more colors to select from a range of stock colors or your own custom color(s).

In the Custom: field, you can enter a customized color code as the Red Green Blue (RGB) color code. For example, for the color red, enter the customized RGB color code of “FE0000”.