I bought some blue lights. Some I have had awhile. I went to PEP Boys. The package for the bulbs read" O.E.M replacements. I know the color isnt O.E.M. the the quality is suppose to be. I also Bought bulbs I installed and added to the car. And I also bought a set that plugs into the lighter , the down side is you can hide all the wires. So there are options, BTW I don't think I saw to much green if any I did see RED , BLUE and White/Clear And Purple bulbs. Pep boys had a lot of different light choices to choose from. And any price rage you could think of.
Hope this helps . ANd none of the bulbs have faded ...yet. And I live in Sunny AZ