i have never done it before,and i just recently noticed that on all have a little bit(unoticable unless you i look closly) of a colored tint(or something like that) to them,one has a yellowish tint,one has a bluish tint,and the third has a grayish tint.
I first noticed it while playing dirt 3 when i noticed the colors seemed a little off.
How could i go about getting them fixed(easily and free)?