This is my review of the Spooky Green UV contact Lenses(Pair). Color is a lightish green in person. I tested the UV properties earlier in the day (around 4pm) and it got dark around 7pm and it was able to glow a nice bright green. The glow stayed for about an hour to 2 hours. I wasn't sure if it was just the lighting in the room I was in that kept the glow to extend for longer periods but it seemed like it helped a bit. I really like these contacts, they seem well made so far and I don't mind purchasing from this website again. Halloween is around the corner, so I am glad I was able to mock test these out before hand. My contacts arrived in about 2 weeks, so make sure to purchase contacts AHEAD OF TIME!