There are a lot of good clip art in PowerPoint, and many people can only use these clips in their entirety. In fact, these clip art can be arbitrarily modified, combined. The method is as follows.
After you start PowerPoint 2007, click the Insert tab and click Clip Art in the illustrations group. For example, insert a picture of a woman, in the right task pane in the Search text text box, enter "Woman", point "search". You'll find a lot of pictures, select a picture and drag it to the slide. Like a portrait of a character, we need to change the color of his hair.
Right-click on this picture, point "combination → ungroup". The prompt window appears, and the point "yes" converts it to a drawing object.
Now, the picture has been torn apart, want to dye the hair black in the picture, select the hair, double-click, Pop-up context menu "format." Click on the small arrow to the right of shape form. Show all shape styles and select a black style. So that the portrait of the hair has become dark.