Well your lights are green because the film behind the cluster is blue and the stock bulbs are yellowish. BLUE & YELLOW = GREEN. Just peel/scrape off the green film, then pick any color bulb and that's the color your cluster with have.
what Sean said. I made a write up on swapping bulbs in our clusters on the site. I didn't go into sanding off the blue film behind the cluster but you could use the write up if you wanted.
just take a butter knife and slowly peal the old face off. Just make sure you get your needles back in the right spot. i sanded it with the pocket knife i had.lol just use sand paper though.