This has been posted up on Twitter, showing the set areas for the LMP1 designs in the regulations http://www.fia.com/fia-wec-technical-re ... otype-2016.
https://twitter.com/LMPone/status/769948442672058369
Yellow=unrestricted sight lines from the cockpit.
Blue=unrestricted. The 'double wheels' are the minimum and maximum wheelbase, and the front of the car is pretty much unrestricted.
Green=Restricted. Rear wing sits inside the box, cutouts over the front wheels.
So what are the other colours? especially the pink semicircles above the cockpit and the orange areas above the rear wheels.