Thanks for all the feedback!
I'll just live with it, put on a good coat of UV protectant (as listed above), and keep her away from birds and out of the sun as much as possible.
I've got 3 areas on my 2003 H2 Hummer that look like the pic below. The area in the pic is about the size of a nickle but the other two are slightly larger. My concern is that they'll grow and eventually take over the entire car!
Here's what I've done so far:
1. Wash
2. Alkaline wash -...