For the channel overwrite endpoint, I consolidated that to the channel ID endpoint. E.g.:

POST /api/channel/<channel-id>/
{"channel_overwrites": {"index_playlists": true}}

Then this now also handles None and bools correctly. E.g. to "unset" or "delete" an overwrite set it to null. And True/False for the boolean values respectively.

@bbilly1 how do i GET the channel_overwrites now?

They are part of the regular channel data, e.g. /api/channel/<channel-id>/ will have the overwrites, if there are any defined. All keys are optional... so for the channel about page, you should only need one API request to get all needed data.

@bbilly1 implemented and it works, but feels a bit quirky. But not sure why that is.
Will have another look tomorrow.

Fixed styling selection, it was expecting dark.css to exist as a file.