Each hour a new color will make your day bright and colorful as this color changing clock slowly cycles through a different bright glowing color each hour. 
Aurora Colour Changing Clock cycles through 12 different colors in a day as shown in the image with a unique color each hour. Also the size of the LCD display makes the time easily readable even from a fair distance.
This clock features a translucent rubber housing that allows you to turn the lights on or off with a simple tap. There’s also an alarm function that can cause the clock to flash when it’s time to get up. Moreover, this clock can help you know what time of the day it is easily with just a glance at the clock if you are well accustomed to the color it illuminates each hour.
So, it is not only showing the time in an unique attractive way but it is also helping you to communicate with the time easily. This reminds me of Chameleons which share similar characteristics of changing color as a method of communication, including to make themselves more attractive to potential mates 