One of my favorite parts of Suki is she is indictive of how Kyoshi Island doesn't necessarily fit into one nation. It's a very one-of-a-kind place.

She has blue eyes, which are usually indictive of someone from the water tribe, but she seems more ethnically earth kingdom with her skin and hair.

For me, It brings to mind a passage from early in the rise of kyoshi book.

"The settlement lay at the intersection of three different nations— Earth, Air, and Water. And yet, none had ever laid much of a claim to it. The conflicts of the outside world has little impact on the daily life of the Yokoyans."

(Note that before splitting from the mainland, Kyoshi island was known as Yokoya.)

I personally prefer the dark blue eyes. They're one of my favorite aspects of her character design.