I need a few cans of Wurth Silver Metallic spray paint, but everywhere I look is out of stock! What's going on?

www.griotsgarage.com has some silver wheel paint. I think it is similar to Wurth's.

I have been looking for their gold paint as well with not much luck.

You might try the order hotline shown on Wuth's website.
wurthusa.com/project/en/leftnavi/catalog/catalog_application.php?send=OK&searchtext=paint&image2.x=0&image2.y=0