You can fill a vector object with a solid color by clicking on Solid Fill in the Fill tools box (see Vector objects: Fill options).
Before clicking on Solid Fill you need to select a vector object. The "Fill" dialog is then displayed:
In the Color box select the Fill color from:
Foreground: the current foreground color
Background: the current background color
Black: solid black
50% Gray: half white, half black
White: solid white
Custom Color: select a color in the Select Color dialog
Note that the Fill color is displayed in the Preview box.
In the Blending box set the Mode and Opacity. The Mode works in a similar manner to blending between layers, except that blending is restricted to the selected vector object, rather than applied to the whole vector object "layer" (see Vector objects: blend modes).
Once you have set the Color, Opacity and Mode click on OK to apply the Fill.
The particular Solid Fill applied will now appear in the Bezier Options box. Here you can edit the Fill in a number of ways:
First, click on one of the Solid Fills listed in the top box. (Since you can set many of these for the same object, there may be more than one listed. For each of them the relevant details will be displayed in the rest of the box.)
In the Border Size box you can set a border value between 0 and 50.
Click on the Border Color box to open up the Select Color dialog to select a new color.
In the Mode box select a mode from the drop-down list (see Vector objects: blend modes).
Use the Opacity slider to set a value between 0 and 100%.
Finally, click on the Fill Color box to open up the Select Color dialog, where you can select another color.
The changes you make will take effect immediately.
At the top of the box there are some Move buttons. These allow you to move through the saved Solid Fills:
Move operation up
Move operation down
Move operation first
Move operation last
As you click on these you will see the selected object change to display the properties of each of the chosen Solid Fills. If you would like to delete a particular Solid Fill, make sure it is selected and then click on Delete operation . The Solid Fill will be deleted from the list and the next one down in the list applied to the selected vector object.
You can create many Solid Fills for the one vector object, as well as Gradient Fills and Pattern Fills.