I am thinking about painting the air dam (I think thats the term) / lower bumper blue on my silver gt when it gets warmer. I hoping ill be able to do it myself, is the painting plastic pieces how to a good tutorial to follow? I also found this one?
And whats the best way to go about painting it, do I need to take off the air dam, if so is it easy? this one looks like he left it on

just so im using the correct terms:
like this except not orange http://www.migpc.com/forumv2/album_pic.php?pic_id=6061

Thanks for any in help, I appreciate it