You also might want to look here, in the event you have other questions
http://www.modelcarsmag.com/forums/topic/79627-how-do-i-search-for-answers-already-posted-here/
I know you're a newbie, but you're asking questions that have already been answered numerous times. You might want to do some research before you ask your next question. Here's a start
http://www.modelcarsmag.com/forums/topic/79627-how-do-i-search-for-answers-already-posted-here/
Get a non-metallic color, then add silver Pearl X (available at Michael's) to it. Do some experimentation, using varying amounts of Pearl X, before you apply the finish coat.