This is probably something you have never touched before, nevertheless it can be of great help to you. The View Settings window, under the Image Layers tab, you can change the setting of Pixel display from Image pixel view to Mean object view.

The object mean view helps me to understand the general color of potential target objects. Based on this information you will be able to find features describing your target objects more easily. In the example below you see on the left hand side the pixel view and on the right side the object mean view. I would state that if you are looking for a feature describing buildings, the mean object view is more helpful than the pixel view.

Just give it a try and let us know how you use the mean object view in your analysis. Enjoy!