V50 Body : 2006 V50 wing mirror removal/replacement

[tornadof3]

Hi
New to Volvos and recently bought a 2006 V50 2.0D. After a couple of days, I've noticed the driver's side wing mirror is seriously loose. It looks OK but is actually very wobbly - eg it can't be folded in as the frame doesn't have the structural strength to rotate on the hinges. I've peeled back the plastic trim on the inside just a peek and the bolt appears to be in-tact, so I think it's the plastic bits in the mirror body that are snapped (looks like someone's tried a DIY repair job with silicone sealant)

My questions are:

1. Does one really have to remove the internal door trim to get full access to the mirror bolt? This video suggests yes: https://www.youtube.com/watch?v=ZlOmEGfRcqQ but I'm hoping not
2. Do the coloured panels on the wing mirror pop off? Can I buy a second hand wing mirror from say a blue V50 and replace the coloured trim parts with my existing ones?
3. What's the going rate for a (heated/electrically adjustable) wing mirror?

Any help appreciated
thanks