You can assign a color to one or multiple graphic symbols.
Procedure
Right-click a graphic symbol or a selection of multiple graphic symbols, and select Properties. The Properties - Graphic symbol dialog opens.
Click the Fill color box, and select Solid fill. The Choose color dialog opens.
Select the relevant color and click OK. The color is displayed in the Fill color box.
If you want to check the settings you specified, click the Preview button. The selected items are displayed in color according to the specified settings.
If you want your changes to take effect, close the dialog by clicking OK.
The selected graphic symbols are filled with the selected color.