The one problem with glow in the dark stickers is that they need to be "charged up" by being exposed to light. If you take your bass out of the case and go onto a dark stage, they won't work.
Or you could get this: Fretlord Fret OptiX Bass Fretmarker Light
. They run off a watch battery and stick on the neck.
$20 in the USA.
I've never used this product.
When I play in the dark, I just play wrong notes. I figure no one will be able to see me, so they won't know who played the clams.