How can you spray paint mini Christmas lights?

I think spray painting them would not let the light shine through. I actually used coloured markers this year to fill in some bulbs where the colour had come off. Just like new! You might try black marker on a few and see if it’s worth the time. Good luck.

How to Color Clear Christmas Mini Light Bulbs | eHow

https://www.ehow.com/how_5686605_color-christmas-mini-light-bulbs.htm l

I agree with Brenda.

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Paint brush or spray paint

have to use a TRANSLUCENT paint ... something you would use for making faux stained glass ....

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Instead of trying paint the mini lights, which is messy and time consuming, if you wanted a dimmer light, I would suggest to wrap black crepe paper (purchase in a roll) around the lights. This would allow you to still be able to use the lights during the rest of the year for other occasions.