Purple Super Lume Tag
Purple glow is one of the most beautiful and fickle glow colors. During the day it's a cool gray. In the dark it starts its glow life as a deep indigo, fading slowly to a royal purple and eventually lavender. Something about the way the purple light waves hit your eyeballs makes purple a striking, beautiful and almost ethereal color.
Purple is the only color that requires sunlight or UV light to charge. Normal LED lights won't work. It absolutely will only charge up with the sun or a UV/Black light like these.