Adjust Brightness and Contrast with the Smart Brush Tool in Photoshop Elements
Click the Picker menu and click the first thumbnail (Make Dull Skies Blue) in the top-left corner.
The Picker pop-up menu displays thumbnails of various options from which you can choose. As the mouse cursor hovers over a thumbnail, a tooltip displays the Smart Brush effect. The thumbnail in the top-left corner is the Make Skies Blue tool.