This is our first white car ever so I don't know if this is common to white cars. We have the 2019 Premium Forester (also our first Premium). Since the day we got it and through 6 months of heavy rain storms in NJ, there are multiple brownish parallel streaks running down from each and every outside handle and mirror. Why does that happen and is it something I should return to the dealer about? (II have to admit I have not gone to a car wash yet and wonder if that would be better than stormy washes).