I have this http://www.partsexpress.com/pe/showd...ID=16107&DID=7 5.6 inch screen and it has four things on the side to change the color, brithness, ect but I don't know how to use the buttons. I don't know if I push them or turn them, I don't want to mess anything up so if anyone has any suggestions. They are really small and would be hard to do anything to.