TINNZTES USB Powered 7 Colors Changing crystal Design LED Christmas Tree with a Star on Top TINNZTES color changing Christmas tree. Powered by USB. 7 Color changing when you powered it. Crystal Design, very beatiful. A must have desktop decoration. This tree brings the holiday cheers right directly to your desktop. It smoothly changes from one color to the other colours to have a rainbow effect. Suitable for Home Party, Bedroom, Holiday Decoration Lighting etc.