Output background color for the errors

[rraadd88]

Hi, would it be possible to set the background of the errors in red as in the native jupyter?

Native jupyter vs vscode-jupyter.

It would be very useful feature I'd argue to easily distinguish stderr from stdout.

FYI, I tried this, but it did not work:

{
    "workbench.colorCustomizations": {
        "errorForeground": "#ff0000",
        "editorError.foreground": "#ff0000",
        
        "notebook.outputContainerErrorBackground": "#2a1f1f",
        "notebookErrorIcon.foreground": "#ff4444",
        "notebookStatusErrorIcon.foreground": "#ff4444"      
        }
}