It all depends on what shade of silver you have and even then there's a very good chance it's not gonna match whatsoever; on top of some of Toyotas colors being stupid hard to color match already (for example, millennium silver) you also have to account for any way the paint on the adjacent panels has faded/altered over the years with age - and not to mention the hood would be lacking clearcoat, pearlescent and/or metal flake as well - it would all just stick out like a sore thumb. And as said, do it wrong and you're gonna be sanding it bare down the line
Duplicolor should sell your color, you could also use the plastidip as a sort of primer/base layer then spray the touch-up paint on top of that. In theory you should be able to peel it then if need be; this is something I've tried on various small projects but nothing with a finish like a body panel and definitely nothing large. Just a thought
I would ask yourself if you'd rather have a slightly faded hood, or one that doesn't match at all