Nice job, especially with the BG and color-flipping!
Few things, of course:
Could you move the Svizzera/Schweiz/Suisse text to the left a few pixels? Also, is the S in Suisse lined up with the others? I can't quite tell, but it doesn't look like it is.
The army circle for Zug could cause problems with border-visibility when numbers are in there. Maybe it would work better to put the circle in the southeast of the territory and move the word Zug northwest a tad.
The army circle for Chur overlaps the border. You've got plenty of room there, so you could easily move it down a few pixels.
The army circle for St. Moritz does this too. You probaby have room to fit it to the left of where it is now.
Guess what...another army circle! This time, it's in Neuchatel. You could move the text south and the circle southwest to fit it in.
Jura's circle might fit in that little peninsula area north of where it is now if you move the text
Obwalden's text and circle overlap a bit; you can move the circle down a few pixels
*Phew* I think that's everything for now.
Edit: Shouldn't this be an advanced idea by now?