Hi,
Using colour theory is very helpfull when choosing colours to fill your art.
The website
https://color.adobe.com/nl/create/color-wheel
is such an example.
It would make the process of creativity a bit more efficient when something similar is added, you can choose your colours more swiftly.
Like an extra tab on the right next to the color tab. Where you would have a colour wheel with handles and at the bottom a dropdown menu with triad, shadows, monochram, analog, etc,... and at the right of the colour wheel, 5 squares with the colours to work with. And when you click on one of the colour squares you would have the colour hex.