How to set "color_default_background" config?

[NgYueHong]

I am trying to set "color_default_background" to yellow and I have tried to add it to config file, but it doesn't work.

For more information about this config, you can see it here: https://www.tiny.cloud/docs/tinymce/latest/user-formatting-options/#color_default_background

May I know how should I set this config with your plugin? Thank you.