Replacing current color choosing mechanisms with a color picker
I think the current way, a user can customize the color/color-zones of certain widgets isn't perfect. The box and line widgets only allow the user to choose between ten colors and the way the color-zones can be changed for the gauge widget is very complicated. A good alternative would be implementing a color picker for these situations.
I've already experimented with react color and I'm certain that the integration won't be a problem. There are different styles to choose from. I personally prefer the Sketch picker but if this is a feature that others would like as well I'd be interested in their opinions :)