Soak rice noodles in hot water for 5 minutes; drain completely.
Heat vegetable oil in a wok on high flame until smoking.
Add garlic paste, julienned cabbage, carrot, and capsicum; stir-fry rapidly for 2 minutes.
Add soaked noodles, soy sauce, turmeric powder, black pepper, and salt.
Toss continuously on high heat for 2 minutes until noodles turn vibrant yellow and serve hot.