Can you put a fill in the Nav Bar?

[ShapeShifter]

Double click on the nav bar and select Ungroup to Edit Graphics.

Is this action possible with Web Designer 7 Premium?
Double clicking opens the NB Dialogue here.

They way I'd edit an existing navbar in WD7P is to select the navbar, open the NB dialogue and uncheck the 'Adjust button widths....'
ctrl+select one button background and shift drag-and-drop a woodgrain fill from the fills gallery. Adjust as necessary. Auto repeat takes care of the other buttons.

Hide the mouseoff layer and repeat on the mouseover layer.

Once done, re enable 'Adjust button widths....'