If they're all white at least the plotline that the King refuses to acknowledge that Rhyneris (sp?) children are bastards makes some sense.

As it is the plot makes absolutely no sense. The sheer stupidity takes you out of it.

It changes the intended motivations, personalities, everything. From a king who is maybe naïve, or too trusting, or willing to play some theatre as long as there's a drop of doubt, to a king who is mad, or delusional, or a despot who demands his subjects ignore the obvious truth.