I found an older model (2020) in my size at this one store (ordinary sport show) and it's apparently leather and not PU (newer ones are synthetic upper)
$40 usd.
BUT the right shoe sole's rubber bit in the front and another small patch in the back is GREY. (Same shoe had a few bits of fine dust on it here and there like it wasn't kept in the box)
Is it sun aging or something? It's not yellow, just completely grey silverish color.

Store worker said its probably a factory mistake and I can't whiten it. I acted like a gypo and complained and she said they could lower it another 10%.

Can I fix it by leaving it in the sun with hydrogen peroxide and baking soda or something? And it will become white?

Anyone know?