I just did this today. It took me several hours, but that's because I've never opened my headlights and I was trying to be really careful so I didn't break anything. I'm also convinced they put way more sealant on my headlights than they normally do because it was just loaded with the stuff. Anyhow here are my results:
^ before reassembling ^
^ With blue 9-5050 194 LEDs (if only it were legal) ^
^ With white 9-5050 194 LEDs (the way it shall remain) ^
Sorry for the ****ty pics, they were taken from my phone.