...but perhaps not a simple answer.
When reading a book, if you are not specifically told or given really obvious clues to a character's race, what do you see, and why?
I'll go ahead and say it, when I read, white is the skin color I see. I'm white. I've lived most of my life in communities that were mostly white, and that's what I tend to see. In fact, I got halfway through my first 'Alex Cross' novel before I realized that Cross was black.
I've always assumed that readers have a 'default', if you will, and will picture ambiguous characters as being of the same race as they are, but I've been informed by one person that I'm wrong, or that it may not be that simple. So, what is it for you? No judgments will be passed.
Have a pleasant weekend, everyone.