Nice little SPOT, deco and more effectively to put shelves or trinkets worth for example, certainly not for reading, soft and rather light BLUE color, attention can not therefore match if you have SPOTS ceiling that return a white light or yellow, to see, As for the installation, we have pasted directly with the small round adhesive pad provided directly from our glass shelf, wondering what the purpose of the "trick" émant supplied with, I hope the the adhesive will not fall! So all in all satisfactory product. It is turned by pressing on it, ditto to turn off. Finally, is well suited for dark spaces like dressing etc, but with the stress of having to turn on and off each time.