Change Fill Color In Drawing Object. In the former case investigate the Smartfill tool which will create a new object form the area bounded by other objects then you will be able to fill it. In the Materials palette select a new color you want to change your object to.
Then click on the object that you want to change the color of. To see the result click a blank spot in the drawing area so that your shape is deselected. Once they are ungrouped click on the outer circle only to select it.
Conversely you can replace the color only in outlines or a specific type of fill.
You can find a color in a drawing and replace it with another color. Click on the Drawing Tools menu and select Rectangle. If this is the case you can keep clicking on these missed pixels until the image color is. You might have some pixels that fall outside of the Tolerance setting.