While RGB based LEDs appear in many modern tech devices, the principle actually date back several years. A Single LED could light up in only one colour but modern tri-chromatics LED strips can display up to 7 basic colours with shades in between. This can be particularly useful for eyes catching on a shop entry gate: the video shows an installation done by 2R Pubblicità S.r.l. - Villa di Serio (Milan District- Italy) in which a single Power Supply at 24 V DC has been used to power each RGB strip, instead of conventional 3 Drivers techniques, with relevant saving. The whole system is controlled by an Android Smart Phone, providing innovative solution to transform a standard illuminated gate into a unique piece of functional art. Electrical project and technical solution by Fausto Martin.