This is impressive, I’ve noticed though that some of the elements in the sidebar are a bit too big, such as the Tools, but otherwise it’s really well made.
A button to be able to download an empty-FishForYou.html (you can learn from empty button in tiddlywiki.com, …)
Your color pallets looks very nice, the gradient colors in scrollbars, site title, the icon sets you have used, …
Can a user export these settings (notebook theme + palette customization + icons)?
yeah, This theme haven’t support switch other palette to better ui at the beginning of use, it’s just customize of notebook, but I will use colors in theme with palette,