Can I have the second hand switched AD...

[dayusmc]

I bought a SD4k a couple of weeks ago. I was wondering if I can take it to an authorized dealer/service center a d have them put a Red YM Second hand on it or would it void the warranty?
I know if anyone else opens up the watch and works on it the warranty will be void, but wasn't sure if I had and authorized place do it would it still void the warranty.
One one other question. I read the post on here with pictures of a SD4k that came with a Sub C bezel insert when they first came out. I love the look of it. I was wondering if I changed mine over to the Sub bezel insert if that would void the warranty. Wasn't sure because it is not on the inside of the watch. I don't really know anything about the warranty, so I figured I would ask the experts. Thanks for any insight you can give...