SAN DIEGO — Setting up Petco Park for the Holiday Bowl requires a bustling, sweat-soaked ballet. The steps and stages call for fancy footwork and specialized equipment like an oversized forklift with a price tag of $35,000. There’s a new, colorful wrinkle in 2023. “The tricky thing for the Holiday Bowl is paint,” said Ken Kawachi, senior vice president of ballpark operations for the San Diego Padres. “The DirecTV (sponsor) logo at midfield is 10 colors.” For Petco Park, that’s simply Act I. USC faces Louisville on Wednesday, beginning a 16-day run that transforms the park from baseball to foot…