Just type the color that you want your lights to be, press the button, and voila! You can type the name of any color (red, blue, green, etc.) or if you want to be really specific, you can input the hex color value.
Then
Change color
This Action will change the color of your hue lights. NOTE: Accepts color names and CSS hex color values. Defaults to white if no color match is found. NOTE: not compatible with hue lux bulbs.
Explore more great ways to automate Note widget and Philips Hue