Folks...I have a mid 2015 15" base model. I have noticed that when watching videos that have a white background, artefacts start to appear and the screen turns to yellow. Anyone else have this problem their 2015s ? The white changes yellow when I do not move around on the trackpad. After the screen changes to yellow, if I move around on the trackpad, the screen changes back to white An example youtube video can be found here.