i dont think the paint from an 03 will have faded much, esp. silver.

 

I have a similar issue. No cracks but a lot of small dents (from those damn shopping carts) and a few scratches on both bumpers.
The touch up paint (Dupli-Color) does not match too well.
I found these guys on the web: http://www.automotivetouchup.com. I'll give it a try. I have some experience with painting, but if I totally f... it up I'll get a pro paint job.

Has anybody tried something similar?