I have a stuck pixel at my opo. I can just give you one advise. Don't change it. Just don't care about those pixels and more important: Don't search dead pixels. I wad also like you, and so i ordered 3x htc one x, 3x galaxy s3 and all of them had dead pixels or stuck pixels. Also my galaxy s4 had one, and my lg g2! So every ****in phone has them. It's like a big joke and you need very good luck to get one without.
So now i have my opo, and also have 1 stuck pixel. But you know what, i don't care. You have to learn this.
Otherwise you'll be going crazy. Just be happy with your phone. In some time you will get another phone anyway.