I just glazed some areas of the figs with raw sienna.  Glazing is a technique that allows you to add a hint of transparent color by watering down the paint so that it is barely there.   I use my fingers for this process so I can rub the glaze onto the area with close control, adding and removing quickly until I achieve the amount of color I desire.

You can see the raw sienna glaze fairly clearly on the  left side of the fourth fig from the right.  Each fig has some of the glaze.  Click on the photo to enlarge, and take a look at the transparent color.