Make it green

[fregante]

Haphazardly copy-paste code from https://github.com/fregante/bundle/blob/main/public/index.html

[fregante]

This also fixes a couple of issues:

• the site title remains visible — it can be clicked to reset the tool
• the input field remains visible

[fregante]

There's still room for improvement and the icon is missing, but

Before

After