Rainbow Liquid Activated Light Up Ice Cubes. SKU: LIT687DZ Our water-activated light-up rainbow ice cubes do not have the usual on and off buttons but are liquid activated. So as soon as you place them into a drink of your choice they will rotate through all the colors to create a fabulous light show. Watch as they rotate colors, flash and create a fun look for any party theme. Our cubes look great as water decorations in water-based centerpieces, too. Perfect for bars. restaurants and special e