I've had the Ghost Armor on my white iphone for a while now but peeled it off because it was starting to turn blue. My brother had the ZAGG Invisible shield on his white iphone and it turned blue too. Today I was looking at something called "iShieldz" and I was wondering if this would turn blue too. It's strange, all the poor quality screen protectors never turned blue. Are there any screen protectors you guys recommend that are strong and won't turn blue or any other color?