Repainting E420 into silver E500 limited

Would it be extremely expensive to repaint a regular 1995 e320 or e420 from a different color into brilliant silver or "Briljantsilber" like the E500 limited. I'm particularly concerned about the lower body panels and front and back bumper since they seem to be plastic, is it extremely expensive to convert them from their original color into brilliant silver.

By extremely expensive I mean 10K or more.

Here are a couple of pics of what i think is a E500 limited from the fire and silk website, it's all the way at the bottom, no 10 & 13

http://members.lycos.nl/Mercedes500E/pagestart.html

Thanks for any info you can give