How to change Error Line background color in vscode?

Question

I have just started to learn flutter in vscode. But the error line backgrounds doesn't look good. Are there any way to close them? Here is the example:

Answer 1

You can change the background of an error via the editorError.background property within workbench.colorCustomizations:

"workbench.colorCustomizations": {
        "editorError.background": "#00AA00"
    }

The above is a bright green, and looks like this:

If you mean the squiggly underline, the property is editorError.foreground.