I give Max a pass when he wears orange pants, at least its patriotic!
BTW, have there been other Kings of the Orange Throne with orange hair besides him?
Including Wax there have only been 4 kings of the Netherlands.
Willem I : based on the pictures available he had brown hair.
Willem II : his hair seems to have been dark blond /brownish (also based on pictures avaible)
Willem III : based on the pictures available he had brown (dark) hair.
After Willem III the Netherlands would be ruled by three queens for ca. 123 years
Wilhelmina : her hair seems to be brownish.
Juliana : her hair seems brownish
Beatrix : her hair (was) brown.
So apparently no kings or queens of the Netherlands with 'orange' hair before.
Before the kings, the family of (Orange-) Nassau ruled the Netherlands as 'stadhouder'. Perhaps some orange hair over there, but we only have drawings of that time.