Take a paintball, use a syringe to remove the paint, and then refill it with the glowing stuff from a lightstick
http://www.millets.co.uk/millets.storefront/product/114457.aspx?searchbreadcrumbs=light
Might work, might not but worth a try don't ya think?
wouldnt work as they balls would have to have a glass ball in the middle you would have 2 break. so the 2 chemicals would mix. and you couldnt produce them unless you knew the paint was going to be shot with in the next 4- 12 hours(life of a glow stick)