This Strange Little Tool Generates
Dark, Gorgeous, Wildly Saleable
Coloring Page Prompts On Demand
…And the people using it are quietly publishing 30-book coloring page empires on Amazon KDP and Etsy — without hiring a designer, touching Photoshop, or writing a single word themselves.
Let me tell you about Sarah.
Sarah is not a designer. She can barely open Photoshop without breaking into a cold sweat. She's a bookkeeper from Ohio with a love of dark, moody aesthetics and a side hustle addiction she can't shake.
Fourteen months ago, she stumbled across something that changed everything: the exploding demand for dark academia and gothic coloring books on Amazon KDP.
She didn't have prompts. She didn't have a strategy. She had a browser tab with Midjourney open, a blank document, and the creeping dread of staring at the cursor for forty-five minutes trying to describe a moody Victorian library in enough detail for an AI to actually generate something printable.
Sound familiar?
Here's what most people do: they type something generic like "gothic library coloring page" and wonder why the AI hands back a muddy, over-shaded mess that looks nothing like a clean coloring page.
What the successful KDP sellers figured out — the ones quietly clearing $800 to $3,000 a month in passive royalties — is that the prompt is everything. The difference between a coloring page that sells 200 copies and one that collects digital dust is about 40 words of highly specific, properly structured prompt language.
Sarah eventually found those words. It took her three months of trial, error, and more failed Midjourney generations than she cares to count.
You can have them in the next three minutes.
A Glimpse Inside the Tool
Highly detailed black and white coloring page illustration of a Gothic wedding ceremony: a bride in black lace dress and a groom in a dark Victorian frock coat at a ruined stone altar in a roofless chapel, ghostly guests filling the stone pews behind them...
Highly detailed black and white coloring page illustration of a Victorian scholar's private study: floor-to-ceiling bookshelves packed with books, an enormous partner desk buried under maps and candles, a carved stone fireplace with skulls and hourglasses on the mantle...
Highly detailed black and white coloring page illustration of a sprawling Victorian cemetery at dusk: hundreds of gravestones, ornate iron-fenced family plots, ancient oak trees draped in Spanish moss, a Gothic chapel with stained-glass windows glowing from within...
↑ The actual tool. No login. No internet. Runs directly in your browser from a single file.
Here's Exactly What the Umbra Scriptorium Generator Is
It's a single HTML file — no app, no subscription, no cloud, no login — that contains 330+ fully engineered AI image generator prompts, each one written specifically to produce a clean, printable, black-and-white coloring page illustration when dropped into Midjourney, DALL·E 3, Adobe Firefly, Stable Diffusion, Ideogram, or Leonardo AI.
Each prompt is already formatted the right way. It already starts with the magic words. It already specifies white background, bold outlines, no shading fills. It already tells the AI this is a coloring page, not a finished illustration. This is not something most people figure out without weeks of painful trial and error.
The prompts are organized into six dark, commercially hungry themes — each one with simple, medium, and intricate complexity levels so you can build entire themed collections without repeating yourself:
- 📜 Scholar's Study — Victorian desks, towering libraries, celestial globes, illuminated manuscripts, secret archives. Dark academia at its most lush.
- 🪦 Graveyard — Weeping angels, Victorian funerals, catacombs, Day of the Dead altars, moonlit cemeteries. The perennial bestseller theme.
- 🕯 Crypt & Occult — Séance tables, grimoires, alchemy labs, tarot spreads, crystal balls, spell jars. Witchcraft aesthetic sells like wildfire on Etsy.
- 🩸 Haunted Manor — Ghost ballrooms, haunted nurseries, poltergeist parlors, forbidden wings, Victorian apparitions. Horror fans are loyal buyers.
- ⚓ Drowned & Deep — Sunken cathedrals, ghost ships, sea witches, kraken attacks, underwater cities. A blue-ocean niche (pun fully intended).
- 🌹 Dark Romanticism — Gothic weddings, vampire aristocrats, Pre-Raphaelite tragedy, memento mori, Bronte-esque moors. Romance + dark = category dominance.
Click one button. Get up to 500 prompts shuffled and displayed as cards. Click the card. Prompt copied. Open Midjourney. Paste. Done.
That's the workflow. That's the whole thing. A complete coloring page book's worth of prompts in the time it takes to drink a cup of tea.
What the Prompts Produce
Drop any prompt into your preferred AI generator and receive print-ready black-and-white coloring page art like these styles below.
↑ Illustrative style examples. Your AI generator outputs will be far more detailed using the provided prompts.
Now Let's Talk About the Money. Because That's Why You're Here.
Here's the unsexy truth about Amazon KDP coloring books: the market is enormous, the barrier to entry is almost zero, and the profit margins are absurd.
A 50-page coloring book published on KDP costs you nothing to list. Zero. Amazon prints it when someone orders it and hands you a royalty that typically runs between $2 and $6 per copy on an 8.5×11 paperback priced at $8–$12.
The dark academia and gothic niche is particularly sweet because:
- There are almost no serious competitors. Most sellers are still doing mandalas, flowers, and animals while the goth market screams for content.
- The buyers are obsessed repeat purchasers. Find one who loves your graveyard coloring book and they'll buy your haunted manor book too.
- The aesthetic photographs beautifully for Etsy listings — moody, atmospheric, instantly scroll-stopping.
- PLR (Private Label Rights) bundles of dark-themed coloring pages sell for $17–$97 in Facebook groups and Etsy digital downloads every single day.
Let's run a simple, conservative scenario:
| Action | Time | Monthly Income |
|---|---|---|
| Generate 30 prompts (Graveyard theme) | 2 minutes | — |
| Generate 30 coloring pages in Midjourney | ~3 hours | — |
| Format into KDP interior (Canva or BookBolt) | ~2 hours | — |
| Publish Book 1 on Amazon KDP | 1 hour | — |
| Repeat for 5 themed books | ~30 hours total | — |
| Conservative royalties at 5 sales/day across 5 books | $900–$2,400/mo | |
That's not a promise. That's not a guarantee. It's math based on what real KDP sellers in adjacent niches publicly report, applied to a niche with demonstrably lower competition.
And it assumes no Etsy, no PLR bundles, no digital downloads. Add those streams and the numbers look very different.
Three Distinct Revenue Streams.
One tool feeds all three. Use one. Use all three. There is no wrong answer.
Amazon KDP — The Passive Royalty Machine
Generate your prompts. Feed them to your AI generator of choice. Download the images. Drop them into a Canva or BookBolt template. Add a cover (one more AI image, or a premade Canva template). Upload to KDP. List at $8.99. Done. No inventory. No shipping. No customer service. Royalties deposit to your account every month whether you're awake or not.
Best themes for KDP right now: Graveyard (seasonal spike in Q4), Scholar's Study (year-round dark academia fashion cycle), Dark Romanticism (Valentine's Day goldmine).
Etsy — Digital Downloads at Zero Fulfillment Cost
A single coloring page PDF listed as a digital download on Etsy sells for $2–$5. A themed bundle of 20 pages sells for $10–$20. You upload it once. Etsy delivers it automatically forever. Your one-time work hour keeps earning. The gothic and witchcraft aesthetics have an enormous, loyal, repeat-buying audience on Etsy — they spend money on their aesthetic habitually.
Etsy tip: The Crypt & Occult and Dark Romanticism themes photograph better than anything else for Etsy mockup listing images. Moody sells.
PLR Packages — Sell the Same Pages Over and Over Again
This is where things get genuinely interesting. PLR (Private Label Rights) means you sell the coloring pages as an editable product that buyers can rebrand and resell. A bundle of 50 dark academia coloring pages with PLR rights sells for $27–$97 in online communities, Facebook groups for digital product sellers, and on platforms like Payhip or Gumroad.
The Umbra Scriptorium prompts give you themed, cohesive sets — perfect for building PLR bundles that feel curated and premium, not cobbled together. Generate 50 Scholar's Study images in one afternoon. Sell that bundle 100 times. Do the math.
What Other Creators Are Saying
"I've spent $300+ on prompt packs that gave me generic rubbish. These are different. The prompts actually specify everything — coloring page style, bold outlines, white background — things I had to learn the hard way over months. I had 30 usable images inside an hour of opening the file."
"I packaged 50 Graveyard and Occult prompts plus the generated images into a PLR bundle and listed it for $47. Sold 28 copies in the first week through one Facebook group post. That's $1,316 for an afternoon of work. The tool paid for itself about 400 times over."
"What hooked me was the offline part. No subscription. No cloud. No monthly fee waiting to ambush me. I downloaded it once and it just... works. My whole coloring book operation runs off this one HTML file and Midjourney. Three books published. Working on the fourth."
Everything You Get
One download. One file. Complete.
- 330+ deeply detailed, AI-ready prompts — every prompt pre-engineered with coloring page formatting, white background specification, bold outline language, and printable page style.
- 6 dark themes with 50+ prompts each — Scholar's Study, Graveyard, Crypt & Occult, Haunted Manor, Drowned & Deep, Dark Romanticism. Each commercially distinct.
- Three complexity tiers per theme — Simple (great for children's gothic coloring books), Medium (standard adult coloring), and Intricate (premium detail for serious collectors).
- One-click copy on every prompt — click the button, paste into your AI generator. No selecting, no scrolling, no headaches.
- Coloring tip for every prompt — tells you which color zones to work with, what mood the finished page should have, what colors to prioritize. Useful for writing compelling product descriptions too.
- Export all prompts as a .txt file — organized, labeled, and formatted so you can hand them to a VA, use them in a workflow, or keep them as a reference library.
- Filter by theme, complexity, and sort order — curate exactly what you need for any specific project.
- Favorites system — heart the prompts you love. Filter by favorites only. Build your perfect collection.
- Zero subscription, zero login, zero internet required — this is a file. You own it. It works on any device that has a browser.
- Unlimited use, forever — there are no usage limits. Generate 10,000 coloring pages. The tool doesn't care.
Questions You're Probably Asking
Stop Writing Prompts From Scratch.
Start Publishing.
330+ deeply engineered dark academia and gothic coloring page prompts. Six themes. Three complexity levels. One file. Works offline forever.
✦ Get Instant Access Now ✦30-day money-back guarantee. If it doesn't help you create and sell coloring pages, reply to your receipt email for a full refund. No questions. No hoops.
UMBRA SCRIPTORIUM · DARK ACADEMIA & GOTHIC COLORING PAGE GENERATOR
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