The color gradient wheel causes light bulbs to display 99% white light everywhere inside the circle, then drastically switches to "color" when the bubble is placed on the very edge of the color gradient wheel. So 99% of the color options are just white light with no gradual adjustment of color intensity, which Phillips Hue does just fine. It is a rip off and false advertzing. With kasa, its either all blue or no blue with no in beteeen because thier software/firmware is designed by morons.