Do this at your own risk. Not sure how durable it'll be. Time will tell, but they look really good. I was lucky to find a good color match. Gotta make sure they're really clean before covering 'em. No wax or Armour All type stuff, or it isn't going to stick. If they're clean and you use a heat gun to warm it up after it's on (don't melt it, just warm it), it should stick good enough. If you're not really good with applying vinyl, you could have a harder time than you think. An option is to take your Focus to a vinyl graphics shop and get them to do it for you. They'll be able to help with a good color match too.
The nice thing is if you get a ding in it, you can just peel it off and re-do it. Guess it's just a poor-mans alternative to preping/painting them. Some paint shops won't even touch them.
Yah, I saw your web article on how you had a buddy who worked at a paint shop or something? Looks good. Unfortunately I don't know anyone who has access to all those supplies and facilities. If I had to pay for it all, probably cost a bit. That's what makes doing a vinyl application nice, cost is next to nothing, if you know how.