{java here, sorry}
public class Colors
{
public static class Greens
{
public static Color GreenYellow = new Color(173, 255, 47);
public static Color Chartreuse = new Color(127, 255, 0);
public static Color LawnGreen = new Color(124, 252, 0);
public static Color Lime = new Color(0, 255, 0);
…
}
}

so I can Reference colors like this: Colors.Greens.Lime

A big benefit is in the autocomplete. It does generate a bunch of extra objects, but I don’t have to think about the colors and I can always go back and remove the ones that aren’t being used - this then equates to the ‘flyweight’ GOF pattern.

Like you site and the quadtree explanations - thanks!