I had ordered two sets (four lights in each set) to go on my deck railing. They were very easy to install (unlike some others-wont mention any names). The first week I put them up, they worked GREAT. So, I ordered another set. But, after that 2 of them (1 from each set) stopped working. It could not of been the location, because they worked at first. But, I thought lets try something. So, I unscrewed them, put a new battery in them, and changed their location. NOPE, still not working. The ones that are working, give off a nice cool white look. I'm planning on contacting vendor to get replaced. Hopefully, that will work well.