Of course it will change because it will yellow with time but hey, for the price, it is 10 times cheaper than that of Apple for example.
If the seller reads this message, please, find another protection for the screen because even if you offer it, we thank you, but it protects screen is not at all the dimensions of the iPhone 6. Missing at least 5 mm side length 3mm ....
That said adpanne before finding another that's cool, at least it is transparent crystal clear!