Background color per saved session

Thank you for WindTerm and for your active maintenance of this great project.

I have a small feature request. Would it be possible to add a feature that allows assigning different background colors to each saved session?

In my team, we have a rule that any session connected to a production server must have a yellow background. This helps prevent dangerous operations from being performed on production environments by mistake.

WindTerm is an excellent tool that perfectly meets my needs in almost every way. However, since it currently doesn’t support per-session background color settings, I’m unable to use it at work. 😩

Start by locating how WindTerm stores saved sessions and applies terminal background settings; the issue names no files, tests, or entry points. Done would mean each saved session can have its own background color, including the requested production-session warning use case.

Written by the indexing model from the issue text.