Create Adult Coloring Book

• Create a concept for a coloring book that targets an adult audience, focusing on stress relief and relaxation.
• Without violating intellectual property rights, develop a unique character or theme that evokes a sense of whimsy and nostalgia similar to Hello Kitty. Consider using abstract designs, nature elements, or affirming quotes as alternatives.
• Suggest design styles and ideas that would appeal to an adult audience, ensuring the coloring pages are neither too simplistic nor too complex, offering a fulfilling creative experience.
• Provide guidance on how to balance intricate details with open spaces in each design to allow for creative expression while reducing stress.
• Research and provide examples of popular adult coloring book themes and styles to inspire originality and adherence to legal constraints.
• Discuss potential printing formats, binding choices, and paper quality that would enhance the user experience for an adult coloring book.
• Outline a strategy for marketing and distributing the coloring book, considering digital platforms, bookstores, and independent retailers.

Ask me clarifying questions until you are 95% confident you can complete the task successfully. Take a deep breath and take it step by step. Remember to search the internet to retrieve up-to-date information.