is one our sponsors. they have green LED dome lights for 3rd gens, If you call 'em you can probably get them for your 4th gen too.
I swapped out the LED interior lights that I had in my '08 directly into my '10, so I believe all the bulb sizes are the same.
I've had some good luck with Oznium
in the past, they have just about every color that you can imagine (and probably a few that you couldn't).