I've created a Shortcut for this.
First, create a folder with the following inside:
zNewFolderTemplate.html
zFolderLight.png

zFolderDark.png

Install this shortcut and edit the note at the top to the path of your folder containing those files above:
https://www.icloud.com/shortcuts/13efb87d2bc54770919225e4ab67ee87
To create a "new folder", just run the shortcut and enter your desired name and it'll open in Orion. I personally use Raycast to run shortcuts quickly, I think you should be able to do the same with Spotlight. They'll be stored as .html files in the same directory as the other files.
There's a bug in Orion where it doesn't show locally stored images as favicons, so you should probably upload your chosen folder images somewhere and change the html so it points to that/those url(s) instead. I don't want to encourage hot-linking to my uploads above!
The ones I made are from SF Symbols and the same colours Apple uses in Finder. The html's background colours (in light and dark) match Orion's colours. But of course, you can change the html (and icons) to your own tastes.