The bright dynamic lighting of "Megakacheli" (mega-swing) was aimed to attract as many visitors as possible. A quick change of deep colors attracts people to the swings, but when the swings are full, the color range changes. When there are no vacant seats, light motion almost stops. In addition, when pair swings coincide in their moving, a color from an intense gamut of the ellipse is added to the lighting. But if the swing amplitude is critically high, the red color lights up. Leaving the swing, the visitor can see the light fading smoothly.