DO-AHEAD TIP: Hard-boil eggs.
Steam broccoli, cauliflower and carrots in a covered saucepan for about 2 minutes; rinse under cold water to stop the cooking process; drain well and set aside.
In a skillet, combine spices (salt through crushed red pepper flakes); sauté over medium heat for about 2 minutes, stirring constantly, until lightly browned (this will bring out the flavors in the spices).
In a large bowl, combine spices, sour cream, vinegar and honey; blend well. Add broccoli/cauliflower/carrot mixture and toss well to coat. Add hard-boiled egg slices and toss gently.
Serve with green onions sprinkled on top.