Completely cover the outside of a mason jar with painter's tape. While rotating the glass in your hands, spray the inside with white spray paint. (You may want to wear gloves for this.) Let dry, then repeat with a layer of high-shine color. Once dry, remove the tape and drop a votive or battery-operated light inside for a tinted glow.
Paint Tip #4: Get Waxed.
Spray items over wax paper -- not newspaper -- to keep them from sticking.