Decorative light: Get a solar-powered butterfly shadow wall lamp. Options: Choose from a pack of one or a pack of four. Quick setup: Simply use the double sided tape to stick it to a surface which receives plenty of sunlight and turn it on. Colour-changing options: Use a simple button to switch between white or colour-changing. Easy to use: Once on, these lights charge throughout the day and then light up when it gets dark. Pretty design: Looks inconspicuous in the daytime, but casts a beautiful butterfly shape when lit.