It sounds like you will need to modify the your color on your screen. Most TV�s have a box where the speaker panels are located. If you remove that box, you will find a small board, remove that board and you will see 6 bolts/screws that can be adjusted. These are marked G (for green), R (for red) and B (for Blue.) Adjust these screws slightly while the TV is on and be careful not to shock yourself. This should solve your problem why your screen turns blue.