If the Krylon doesn't cut it for you, don't laugh, but try some spray bumper chrome in a can, then hit it with some clear coat...it may be close to what your looking for

You may want to try some paints like testers from a hobby store . I have 15-20 different silvers I use for resto from Krylon , Testors , rustoleoum ect .Lots of different touch up paints in spray cans at Advance Auto too . Im shure you can find something very close.