I have a 2000 GSR which is taffeta white. My sister-in-law just bought a Honda Pilot with the same color. When parked next to mine, her car is whiter in color. I take very good care of my car. I clayed it twice, wash it amost every week and applied many layers of Zaino. My question is, how come mine taffeta white is darker than hers? Does the white color get "dirtier" over time? Thanks for your explanations.

p.s. my car is very shiny, just a little darker shade of white.

 

Its the age of the paint.