Hey Charlie,
The current vertical orientation of the color palette with one color per row is not ideal for those who have lots of colors. I create palettes where each main color has 5 to 6 lighter and darker shades. This results in long lists that take more time to scroll through:
Those are just two main colors. There are accent colors, neutrals and system colors as well so the list becomes very long.
Could the space be more efficiently used by changing this to a horizontal layout, like this example:

