01 - Bring a large pot of water to a boil. Divide the boiling water evenly into separate heatproof bowls for each desired color.
02 - Mix a small amount of gel food coloring into each bowl, stirring thoroughly to achieve vibrant hues.
03 - Portion the noodles equally and cook each batch in the colored boiling water for 2–3 minutes less than package directions. Rinse noodles under cold water to halt cooking. Set aside.
04 - In a saucepan over medium heat, melt butter, then add cream cheese. Stir until the mixture becomes smooth.
05 - Whisk in milk, parmesan cheese, cornstarch, salt, and white pepper. Continue stirring over medium heat until the sauce thickens and turns creamy, about 5 minutes.
06 - Gently fold the colored noodles into the sauce, maintaining distinct colors for a cloud-like effect or swirling for a marbled appearance.
07 - Immediately plate the noodles. Top with scallions, toasted sesame seeds, and optionally edible flowers or microgreens.