I'm going to be taking culinary classes starting in August, and perfectionist that I am, I'm already thinking about what to do for my final. One of the things I'm considering, obviously, is rainbow spring rolls. What I'm having the most trouble deciding is what vegetables to use for the filling. As of right now I've chosen: Red - Tomatoes, Orange - Carrots, Yellow - Bell Peppers, Green - Avocados, Blue - Potatoes (colored with food coloring), Purple - Cabbage. For dipping I'm thinking a ginger-soy sauce. What I want to know is, what do you think? Is there a better combination of vegetables? Do you know a good sauce for dipping? By all means, share your thoughts.