I love this salad! I usually use red beets, because they're easier to find, and nectarines just because I like them better. I toss all the other ingredients before adding the beets in order to help retain their colors, but everything winds up red by the time I finish it anyway. That's okay, it doesn't affect the taste at all. It's low in calories and fat, and fairly high in fiber. If I could find a way to make it high in protein I'd eat it every day. ;-)
This was a huge hit - my best friend still talks about it months after I served it to her. Our grocer was out of golden beets so I used red and only tossed it the minimal amount to prevent the whole salad from turning red.
This is one of the best salad recipes we have ever had. My family just loves it. It works equally well with white balsamic vinegar.