Just thought I'd let you all know I was able to remove my side mirror glass however, the plastic covers themselves were held in place by a rivet into the plastic! I was not able to remove them without breaking the covers...
So...I painted them "aluminum look" while they were still on the car.

I was not able to locate any "aluminum" mirror covers for my '04 A6 that did not cost $600 USD!
They turned out quite well actually....I matched the paint color up to a S6 in the Audi dealership parking lot...and its very close. So...for $5 worth of "aluminum silver" spray paint...and a few hours of taping off practically my entire car....the task has been completed.
