This is so easy and delicious. I am known for this dish at potlucks. This salad is very pretty as the three diffent colors sparkle in the dressing. I would describe it as 'sweet & sour.' You can use dark balsamic but it darkens the appearance of the salad. I also prefer to use canola oil and 'cut' beans. Once I didn't have the wax beans on hand so I used 1/2 can whole kernel corn. Worked great!