Created attachment 107221 [details]
It's because the row color is always white since this commit: http://cgit.freedesktop.org/libreoffice/core/commit/?id=0c2b43b70776ea49655a7f18c6c11dc64a5f25b2
Jürgen, can you verify the fix on Windows?
your fix it works under windows, the row-color is the background-color from windows (have test with grey, white and blue).
Palenik Mihály committed a patch related to this issue.
It has been pushed to "master":
fdo#84592 Improve SvTreeListBox class with alternating rows.
It will be available in 4.5.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.