blue illumination interior lights

Hi I just purchased a 2013 hyundai sonata gls. I am really happy with it. I just have a question, i have the illumination to the fullest for the interior and it seems like on the steering wheel mounted controls, some buttons seem not as bright blue as the others (ex. the reset trip button). The car is brand new and only not even 2 weeks old. What might cause this? Does the warranty cover this issue? I have the 7 year extended warranty.

I am just currious to see if thats covered.