In a large bowl toss the green cabbage, red cabbage, carrots, cucumber, and white onion until mixed. Set aside.
Combine all remaining ingredients in a small bowl and whisk to mix.
Pour dressing on top of salad mixture and toss. Serve immediately.
*Try using a spicy lettuce like arugula or radicchio in place of the red cabbage to give the salad some kick.
*This salad will keep for 3 days if kept covered in the fridge.