Marriott hotel in the center of Warsaw is the one of most popular and recognizable building in the center of Polish capital. However, to further emphasize its uniqueness, it was decided to apply accent, dynamic lighting. Lampo company was responsible for this project. They decided on the Griven brand devices because of their quality and reliability. 8 pieces of Onyx, which are characterized by a narrow account of light and 4 pieces of Powershine which are glow flood. Their was used to backlight of the building. The color of light is changes dynamically.