Mix all ingredients together in a small bowl and set aside.
Noodle Prep
Add about 2 quarts of water to a medium pot, and add 3 tbsps. of butterfly pea powder, stir and heat over high heat for about 5 minutes. The more powder you use, the darker the color. The water should be very hot but not boiling. Add half the package of rice noodles to a large bowl and pour the hot blue water over the noodles. Stir and let them sit for 15 minutes to soften and take up the color. Drain and set the noodles aside to cool. Squeeze lemon juice over the blue noodles to create purple noodles. (optional)
Garnish Prep
Punch out 8 witches from a nori sheet using a witch paper punch and set aside.
Use a 1⅝-inch round cookie cutter as a template to make 8 full moons from a sheet of yellow soy paper, using an Exacto blade to cut around the cookie cutter and set the moons aside.
Punch out about 40-50 stars from the sheet of wafer paper using the star paper punch and set aside.
Assembly
Place 2 spears of asparagus, 1 cucumber spear, four small shrimp and a Thai basil leaf on a piece of lettuce and roll up into a bundle.
Dip one Spring roll wrapper into a shallow plate of water and then lay it on your work surface. (Note: The wrapper will still be somewhat stiff but will soften as you place the ingredients.) Place the lettuce bundle in the lower third of the wrapper.
Place a nori sheet witch on the upper third of the wrapper. Then add the yellow soy paper moon over the witch. Add wafer paper stars all around the moon and then add about 2 tbsps. of blue rice noodles over the moon and stars to create the sky back ground.
Fold over the left and right sides of the spring roll wrapper. Next, fold the bottom edge of the wrapper over the lettuce bundle to seal and begin to roll up over the blue noodles until the wrapper sticks and seals up. Repeat with remaining ingredients and serve with sauce and extra Thai basil leaves and black sesame seeds.