For this coloring page, I would use a mix of warm and cool colors to bring out the lion's bright and gentle eyes, emphasizing its majestic presence. The blue sky in the background should be done in a bright, uplifting light blue that brings the feeling of freedom and the joy of the outdoors. The woman in the black dress should be filled with a deep, dark purple that adds mystery and intrigue, while the children should all be done in a vibrant yellow and orange, heightening the vibrancy of the scene. Lastly, the white mane and paws of the lion should be filled in with a pale pink or pastel purple. This will provide a soft contrast and create a more subtle, graceful look.