I have painted one of the bottles to test if I need multiple coats for the LED diffusion.
Just a quick test to see how the LEDs look through the bottle. I need to take alcohol to the date printout before frosting the other ones. The frosting is a spray paint type of thing.
I think this is acceptable, because they will be suspended and pointing downwards in the finished version.
So we'll skip the multiple coats for now and focus on cleaning up the bottles for painting. I've also heard of taking sandpaper to the LEDs to diffuse them more, something I will try when I can find my sandpaper.