Its not because of rust under the chrome, right? That happened to me, and it wasn't fun to replace... I would say the answer depends on your budget. There are ways to counter the dimming by just upping the power of the lights (brighter bulbs, pulling the diffusers) that might just be a lot easier. Also, the respray is a good idea for a cheap solution. FYI, if you chose to replace them, the housing will be probably $25-30 apiece at best unless you can find them in a junkyard (about $11-12 apiece there)