To make a shape or text suit the slide seamlessly, you can change its color. To do so, you will need the eyedropper tool. Mac users can follow these instructions to find this feature. First, select an object you want to find a matching color for, click on the menu to fill a text area color or shape color. Instead of choosing colors from the theme, click on More Colors. The color dialogue box is going to pop up. From there, click the eyedropper icon that is in the bottom left-hand side of the dialogue box. The cursor is going to change into a large round circle. Then you can hover the mouse over different areas to find a specific color.