Show HN: ColoringMagician – Generate custom coloring pages using AI

[blueapple30]

Hey HN!

I made ColoringMagician because I got frustrated trying to find specific coloring pages for my niece. She's a true painter, always complaining about how she'd draw it differently if it wasn't a very generic coloring page.

It's built using a custom model, with some tweaks to generate clean line art (turns out, making AI create consistently good coloring pages is trickier than I thought!). The most interesting part was figuring out how to convert complex images into something that's actually colorable.

Things I learnt along the way:

- Kids are brutally honest beta testers - Making prompt templates is trial and error - Gemini 2.0 Flash is amazing

[realityfactchex]

The Create Now button text seems misleading. It should say, "Create after making an account with your email address or signing in with Google". This is the second time *today* that some neat-seeming landing page tricked me with that. Sorry, I nope'd out.

But, a true "Create now" experience could have been awesome. The preview images on the homepage look clean, and I really wondered what the machine might come up with. (Just not at the cost of a signup/signin.)

[badmonster]

wow this is awesome!