I'm coming from reddit where they suggested me to post here. There seems to be many users with the same issue. Using a 13" MBP Early 2015.
After updating to macOS High Sierra I see weird colours for a brief moment each time I wake up the MBP. Here is a GIF to visualise it. From what I read there, it seems to be an issue with the new Metal 2 graphic system. Any other suggestion?