I found a very good discussion of painting various ethnic skin tones but cannot remember where so I hope the original painter will forgive my posting their info here. They used Vallejo mixes working up dark to light here is what they suggested
Albino
Now, it should be stated Albinos are not a separate race, every race
can have albinos. I’m not really certain what causes it, but I know
it’s genetic and rare. Basically, your skin and hair cannot make
Melanin to protect from the sun. People with Albinism, therefore have a
tough time with sensitivity to a lot of sunlight. Their hair is usually
white or platinum blonde and their skin is only pigmented by their
blood, but it should be said that unlike animals human Albinos do not
have red eyes. But, they sometimes do have reddish or violet eyes, but
normally they have light brown eyes...
Vallejo mixes
Hair : 80% Ivory #918/ 20% Tan Yellow #912, German WWII Beige
#821, 90% Ivory #918/ Brown Red #803, 50/50 Beige #917 and Ivory #918,
Ivory #918
Skin : 50/50 Cork Brown #846 and Beige Red #804, Beige
Red #804, , 70% Beige Red #804/ 30% Iraqi Sand #819 , Brown Rose #803,
Basic Skintone #815, 90% Ivory #918/ 10% Deck Tan #986, Ivory #918
If I can find the link again in the future I will post it here the original author was a genius and deserves all the credit.
OK here is the link I highly suggest you check it out it is excellent
http://www.coolminiornot.com/articles/1310-ethnic-skintones