What race do you think the people are? Why?

We are not provided with information about race in the text. The only description we are given in that of Jonas and Gabriel's "blue eyes"; Fiona's "red hair"; and the fact that all skin color is the same.

"The Giver shook his head. "No, flesh isn't red. But it has red tones in it. There was a time, actually--you'll see this in the memories later--when flesh was many different colors. That was before we went to Sameness. Today flesh is all the same...."