Create a Whimsical Children’s Brand Logo

Craft a logo for a children's brand that illustrates a colorful rainbow arching over a playful treehouse. The treehouse should be painted in bright primary colors with whimsical shapes, and characters like cartoon animals peeking from the windows. The rainbow should be vibrant, with each color distinctly represented, and fluffy clouds floating nearby. The font should be fun and bubbly, giving a sense of playfulness, positioned at the bottom of the logo. The brand name is: HappyKids