You could try painting them green if you really need green bulbs. I found this article on the web:
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Robert Iodice, Licensed Engineer, Lighting Designer, Certified Energy Manager, Lic. Electrician
Updated Apr 5, 2019 · Author has 1.2k answers and 2m answer views
Originally Answered:
How can I spray paint light bulbs?
So, there's a couple ways to color lamps, and yes I have spray painted lamps successfully before but it's not my first choice.
Recently I needed a lot of LED lamps dyed blue. I used Pebeo Vitrea stained glass paint and was able to dip-dye them. It gave me the most consistent color, and because of the range available I was able to create a custom color for the application.
http://www.utrechtart.com/Pebeo-Vitrea-160-Glass-Paint--Set-of-10-Colors-MP-02950-001-i1025425.utrecht
I used a bunch of clip-lights to handle the lamps, and to allow me to clip them up to drip dry.
Krylon makes an aerosol glass paint. I've never used it before but I plan on trying it the next time I have a large number of lamps to dye, because it's got to be less expensive.
Krylon® DIY Series™ Stained Glass Paint
Lastly, I have had some success using aerosol Krylon paint when it used to be a lacquer. The formula changed in 2009, however, to an enamel and it really doesn't work as well as it did for painting lamps. If you decide to use another spray paint, make sure it's a lacquer not an enamel. Enamels usually have too high of a solids content and therefore tend to opacify the lamp’s envelope, reducing the light output.
Regardless of which coating you use, when you energize your lamps for the first time, be sure to do it in a well ventilated area (maybe outside?) The coating tends to outgas pretty quickly and, until it completely dries, it's flammable and you don't want to have a safety issue. Once the lamps dry during that burn-in period, and all of the solvent has outgassed, the chance of it catching fire is nil.
Edit: So I had occasion to go back and check on the lamps I dipped in stained glass paint and I'm pleased to report no appreciable fading after almost 3 years. I had hoped that they would last, but I really didn't expect the experiment to be this successful. I guess that that says something."
