teamitazura22,
I don't know about the brightness. But seeing the cost of prepainted silver bulbs, I think $3 rattle-can paint and a couple spare bulbs are much cheaper.
Here's a
how-to. Another.
Quick search on sellers of silver bulbs:
http://www.care4car.com/productdispl...tor_Bulbs.html
eBay
Edit: Remove "< br%20/ >" without the quotes and spaces from the URL address on the browser window for the eBay link to work.