[aimor]

Well these are the colors they define:

    --primary-color: hsl(var(--hue), 50%, 90%);
    --pre-primary-color: hsl(var(--hue), 50%, 95%);
    --secondary-color: hsl(var(--hue), 50%, 10%);
    --tertiary-color: hsl(var(--tertiary-hue), 80%, 20%);
    --accent-color: hsl(var(--accent-hue), 80%, 20%);

As I see it that's either 3 colors or 5 colors but not 4