"Face me" components do not always, in every position, have proper contrast/exposure. I believe the problem lies in its "dual" nature - they turn towards sun (for shadows), and towards the spectator (for appearance). This results in "half good color appearance - half bad appearance of a subject in the scene.
..is this "a regular thing", or it comes up to my ATI RADEON (not NVIDIA) card issue?
or this "imperfectness" will be solved, by the time?