crash, and java. Read the desc.

okay so every time I open minecraft it seems to make my computers contrast and everything turn different colors. Not just minecraft but everything on my screen until I close it. After I close it my screen seems to flicker a bit and go back to normal. Sometimes it even makes everything really zoomed it. I only seem to have this problem when I open MC. I decided to redownload java and it's doing the same thing. So I uninstalled MC and redownloaded it with java. Only for it to do the same thing and then crash. Please help.