From what I have found sims with cool tone skin look more natural with the "new" hair colors. I gave the Bjergsen a makeover and gave them all cool pale skin to help make them look more swedish/nordic and originally looked too blue and lifeless but once I swapped their original blonde for one of the new ones they looked natural and alive.
One of the issues is that the original colors and the colors of the game generally are that they are too warm and bright that pale and cool colors stand out horribly.
