Creating a tag: text_color is not a missing field

[madduck]

I am trying to create a tag using paperless.tags.draft. If I do not provide text_color, then I get an error:

pypaperless.exceptions.DraftFieldRequiredError: Missing fields for saving a `TagDraft`: text_color.

However, text_color isn't a writeable field in the API, but only read-only. See https://docs.paperless-ngx.com/api/#version-2

I'll have a look at the code and might be able to come up with a pull request, but I don't know how much time I can devote to this. It's probably not as easy as just removing text_color from TagDraft, as you'd also want to make the field read-only in the Tag model, and update tests.