Apply transparency to a shape
Select the shape or shapes you want to make transparent.
On the FormatShape toolbar, click the Transparency button .
Note To display the Format Shape toolbar, on the View menu, point to Toolbars and click Format Shape.
Set the Shape Transparency slider to the percentage of transparency you want.
Note You can also make shapes transparent by setting transparency for individual shape attributes in the Text, Fill (for closed shapes only), Line, and Shadow dialog boxes.