hi all, today i was lying on the couch with air on me so i was looking at it from a very narrow angel and i noticed that parts of the trackpad where i touched more were lighter in colour and reflect the light more and the rest were darker. i extremely rarely use the trackpad so i don't understand how come is this possible that the coating is already wearing off? i assume this is some sort of oleophobic coating like the one on the ipad but the ipad's last a million times longer. what's your experience on the subject? thank you!