The strongest signal from coloring-book discussions is not simply "spooky coloring books are popular." The useful signal is more specific: adult colorists want books that feel hand-drawn, work with alcohol markers, use single-sided pages, and stay inside a clear theme instead of mixing random images.
Why Reddit is useful for niche validation
Search tools show keywords. Reddit shows buyer language. That matters because KDP buyers often describe the problem before they describe the product. A keyword like "witchy coloring book" is useful, but a comment asking for "single-sided pages that do not ruin the next design" tells you what the product must promise.
What buyers were actually asking for
- Art that does not look AI-generated or visually inconsistent.
- Single-sided pages because alcohol markers bleed through normal paper.
- Spooky, witchy, tarot, gothic, potion, occult, and cozy dark fantasy themes.
- Books with a consistent style instead of random disconnected pages.
- Clear previews so buyers know whether the line art fits their coloring style.
The micro-niche this points to
The niche is not just "coloring book." It is a buyer-ready positioning statement: spooky coloring books for adult alcohol marker users who want non-AI-looking art and single-sided pages. That is much easier to design, title, describe, and promote than a broad coloring book idea.
You can validate this exact opportunity in the new niche page: Spooky Coloring Book for Adults.
Sub-niches worth testing
- Spooky witchy cats and familiar animals.
- Tarot animals and mystical creature pages.
- Cozy gothic rooms, candles, bookshelves, and moonlit windows.
- Mushroom forest fantasy with darker fairy-tale scenes.
- Creepy cute potion books with bottles, herbs, cauldrons, and labels.
- Zodiac, moon phases, occult symbols, and astrology-inspired pages.
Red flags to avoid before publishing
Do not publish a generic 50-page coloring book with mixed styles and vague keywords. Avoid using a broad title if the interior is specific, and avoid claiming marker-friendly paper unless the format actually supports that promise. For KDP, single-sided pages and a bleed note are usually more realistic than pretending the paper is premium marker paper.
How to validate before designing the book
- Search the exact phrase on Amazon, such as "witchy coloring book for adults" or "spooky coloring book for alcohol markers."
- Read 1-star to 3-star reviews on competing books and collect repeated complaints.
- Check Reddit and Pinterest for repeated visual themes and buyer words.
- Run the niche through ValidateNiche and compare demand, competition, and trend direction.
- Pick one sub-niche first, then build a series only if the first product gets traction.
Monetization angles
This niche can make money in three ways: a KDP coloring book, a printable PDF pack on Gumroad or Etsy, and a small paid niche report for creators who want research before they publish. The fastest first offer is a simple report: "20 validated spooky coloring book niches people actually want."
Related validation pages
Validate your coloring book angle
Before you design 50 pages, test the keyword, buyer angle, and competition level.
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