An experiment could be done to see whether more layers make the light glow more even at night; the closeup photograph makes the glow look more blotchy than it seemed to the eye. I shook the paint bottle well to mix it and then I tried to paint using vertical strokes with the very small brush (like a "white-out" brush or finger nail polish brush) that comes in the bottle. It don't know whether a painting expert of the vendor could suggest another approach to get a more even green / frosted effect in the day. [October 16, I added a few more layers of paint for fun after the photographs were posted.]

My digital camera has automatic exposure so taking images to show the light decay is not possible because I cannot get the same exposure (it exposes longer if the image is dim) to match the images. As a general statement, in the dark the pigments loose the "super brightness" rather quickly, but they continue to glow at some level for many hours and in some cases days. Like the camera, your eyes partially compensate in the dark.

I see my version as the successful prototype; ideally I'd like to see the logo to be made of a solid luminescent material.

I have not put any sealer on the paint. If you plan to do so, I'd suggest checking with the vendor to ensure that the sealer does not block the incoming light wavelengths that "recharge" the glow pigments.