Ive never seen a company that makes Euro's for our car. However, you could do Red-Outs or Black-Outs ( My personal fav
). Those look very slick.
What are you going for with you Celi? looks? or power?
Looks is easy Rims, Tint, suspension work Some interior work, maybe a body-kit. Whatever you like.
Now power is the tricky part, specially with the 5th gen. If your looking for something that beats vipers...i would suggest another car.
But if you want something that overall a really fun to drive car, start out with and Intake
that you can buy on ebay for like 40 bucks or so.
Then move on and get an exhaust. Dont need to spend like 600 bucks there either. Get like 2.25" inch pipe up to the cat, a nice muffler, and if you can afford it get mandrel bent.
And if you want even more Performance, get the 3s-gte swap or Turbo the 5s. Both of those options are costly. And their is a lot more possiblities with the 3s.
I myself have done all of the above...and now im moving on to get the 3sgte swap, once i can afford it. But Im in LOVE with my car. Dont ever want to get rid of it.
Hope that helps