Comment 26 for bug 819796

Khaled Hosny committed a patch related to this issue.
It has been pushed to "libreoffice-7-6":

https://git.libreoffice.org/core/commit/02243bc209f70a52214e15268ff02c6209c71146

tdf#48707: Explicitly set overline color in PDF export

It will be available in 7.6.0.0.beta2.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.