Rollo, I can answer the first question: Tan is the yellow/orangish skin tone they used to make, but no longer do — it’s neither Old Suntan or Pale, and matches very few head sculpts — some of the Kumik sculpts, and some of the early Super Duck sculpts will work, however.
(How the Hell did auto-correct/auto-fill think when I typed “Kumik”, what I really meant to type was “aluminum”...?! I’m serious, whatever tech-dick came up with auto-correct/auto-fill needs to be cut with razor blades and fed to a pool of ravenous sharks.)