I made this up while on phase 1 of the South Beach Diet. I was trying to keep fresh cut up veggies on hand and I love tuna so this was quick to throw together when I didn't want to think about what to eat. It is also very colorful...I love green, purple and red together. I also love the spicy tuna with the crunch and flavors of the fresh veggies. My favorites are radish sprouts and purple cabbage...sometimes I'll eat it with just those.