I have a strange screen problem with my macbook pro 15" 2011 model. I start seeing some very weird colours and the fonts go very pale grey and jagged. It happens every hour or so and goes away if I change the resolution of the screen back and forwards. Here are some photos, I tried to do screenshots on the macbook but when I looked at the photos on a diff computer I couldn't see the strange colours. Must mean there is a problem with the actual screen or graphics card? Problem is the Blue area in the quick look window: Close up of youtube video: Photo on Macrumors front page, notice strange colours on iMac bottom half: Anyone have any ideas? I havent tried clean reinstalling everything yet but its a last resort atm (got way too many apps, plugins). Also because it is very random in when it happens I don't know how to approach the Apple support about this, I'm sure they want to see this problem on the machine or will my photos be enough to get a repair?