Well...removing the caps involves much patience, but it can be done without demolishing the existing black textured caps on my 2010 Eddie Bauer.
The caps are held into the mirror housing with 4 push in tabs...sort of like most of the other plastic bits on our fords.
So first, tip the mirror all the way down using your inside door control. By looking carefully, you can see the 2 upper tabs that need to be released inside the upper edge of the mirror housing.
The the next easiest for me was releasing the bottom outside edge tab (yeah, finally broke one edge of the tab off to release it)
Finally, the last one at the window side. A bear as it is tucked way inside the cap. It finally broke an edge and released.
The painted caps just push right on after lining up the tabs. imho the royal red metallic caps are a big improvement over the textured black.
Lakeside