Craft a dynamic watercolor painting of the vibrant Palm Beach marina, surrounded by a lush landscape filled with palm trees and luxury cars on the streets. Focus on capturing the fun and lively essence of the area, with colorful and tropical architectural details. Highlight the brightly painted buildings using masterful watercolor techniques to showcase the saturated hues typical of Palm Beach's downtown. The scene should convey the lively and active atmosphere of the marina, depicting numerous people participating in water sports and various activities.