[kdrag0n]

Great points, thanks so much for the feedback!

- Fixed the new-theme issue, not sure how I missed that.

- Undo is definitely a good idea!

- I was considering an embedded Monaco editor for more flexible previews, but didn't end up adding it for simplicity and security (since I'd have to send a mostly complete VS Code theme to the client). I think I'll just add more previews to mitigate it for now. Terminal preview is a good idea too.

- I'm expecting single-theme downloads to be the most common option for users, so I'm not sure how making them free would work out.