This is a beautiful and vibrant coloring page! The young woman at the center of the page stands out, wearing a brightly colored and detailed crown, with light and bright confetti or candy around her. She looks full of joy and exuberance, and this is a scene with all the potential for fun. For the most part, I would go for warm and cheerful colors- using a combination of pink, yellow, and other bright and cheerful hues. I would also add in some blues and greens to break up the palette and provide a nice balance. Spotlighting the woman in the center, her light golden hair and either the crown or the confetti could be in a slightly more muted gold or bronze. I think this page will create a fun, joyful and positive atmosphere.