just wondering if anyone know where I can buy a appearance valve cover trim, I would like to buy a blue one

 

I doubt there is such a thing. I wouldn't do anything to them if I were you, but if you wanted to, you could paint them.

 

As far as that stuff goes, the aftermarket options for our cars are pretty limited compared to other cars. I've never seen something like that available. It is popular to paint them though. Just get something heat resistant.

 

I spray painted mine