I got this one for you so you can spend an hour on the next one haha.
this is what you were looking for, checking the properties of the images compared to their names, the red picture is named 5770 and the size is 5770and the blue picture is named blue and the size is 5714 so using this info you can find this image:
http://www.weffriddles.com/wr2/images/5714.PNG
which brings you to the next level
http://www.weffriddles.com/wr2/nocontrol.html