All of the lights on this tree constantly change color in a really elegant way.  Beautiful.  Anyone who has ever seen fiber optic lights knows how stunning they can be.  If I could do it all over again, I'd get the next larger size.  I bought the 4 foot tree, but the stand and the stem are one foot, making the actual Christmas tree with the lights three feet.  Unfortunately, the motor that spins the tree stopped working after about two weeks.