Please allow me to change the terminal theme/colors programmatically

Prerequisites

• I have written a descriptive issue title.
• I have searched all issues to ensure it has not already been reported.

Summary

I would like to change the theme/colors of vscode (or at least the powershell terminal window) programmatically. Is there some code.cmd command line option for this? Or maybe something could be added to the $PsEditor that lets me set the vscode theme?

I am able to do this with the powershell_ise, but can't get parity when migrating to the code plugin. The reason I need this is because I have several entirely different powershell uses/environments that need to be open at once. Azure TiP vs Tshell vs Windows build window, etc. If I can't set a color scheme per-window then I confuse myself.

The only workaround I have so far is even more copies of the portable vscode install, each with their own settings. Is there a better way?

Proposed Design

Add some function to the $PsEditor that lets me set the vscode theme (by string name?)

No file or test is named in the issue. Start by locating the existing $PsEditor integration and how the extension interacts with VS Code settings or themes; done means a programmatic theme-setting path works independently for Azure TiP, Tshell, and Windows build sessions.