Color can bring a drawing to life. Filling an object with a solid color (called a uniform fill) is just a point-and-click procedure. However, before an object can be filled with color, it must have a closed path.
Select a freehand object with the Pick Tool. If the Auto-Close Curve icon is visible on the property bar (Figure 10.1), the curve is open; if not, the curve is closed.
Figure 10.1. You can close paths manually or click the Auto-Close Curve icon.
To close the curve, click the icon.
Select one or more closed objects. ...