Hi Ihor,

>> Try it 😉
>
> You are right. With default preset, engrave-faces does not need to query
> Emacs about face colors and attributes and should not depend on the
> `display-graphic-p’.

Yep, it works because it’s basically implementing its own face-resolving layer.
This was originally done to allow exporting in a theme different to the one
currently being used as seamlessly as possible, it working with batch mode was a
bonus.

For the information of anyone else following the thread, you can easily add new
presets by creating an elisp setup file for batch mode and running `C-u M-x
engrave-faces-use-theme' in it — code defining a new preset will then be
generated and inserted at point.

All the best,
Timothy

-- 
Timothy (‘tecosaur’/‘TEC’), Org mode contributor.
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/tec>.