I actually prefer playbys, since it is very hard to find free images of Pernese dragons. Because we are ONLY using Pernese dragons in this game. I would prefer play bys, mostly because most of Pern looks pretty human. Minus the creatures that are not human.
As a side note, traits that are considered rarer on Pern.
Blond Hair/Blue Eyes
Blond Hair/Green Eyes
Blond Hair/Any eyes.
Blonds are rare, but they are not uncommon.
Red Heads with Green or Blue eyes
Red Heads with brown eyes are a little more common.
Red Heads in general are not very common.
Dark hair, and eyes is the most common trait. Most people are nicely tanned, but some are of a darker variety. There are some of what we would call 'african americans' on Pern, but they are not very common in the North - more so in the South.
On another note, Heterochromia is not unknown, but still uncommon.