Created attachment 96822 [details]
Steps to reproduce:
1. Open file in LibreOffice
2. Save As (Microsoft word 2007/2010(.docx))
3. Open the round trip file in MS OFFICE.
The file should open properly after round trip.
It gives a message "The file cannot be opened because there are problems with the contents".
c176cb8907530a795cb0e38de8193df931f891fb was still good, 95d7ebd22dd20da5a7a26000494b553944fc23ee is already bad, probably I broke it with one of my follow-up fixes to 6e61ecd09679a66060f932835622821d39e92f01 (Merge back branch alg_writerframes to trunk, 2014-03-19).
Miklos Vajna committed a patch related to this issue.
It has been pushed to "master":
fdo#76979 DOCX export: a:srgbClr should be always an explicit color
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.
No backport, problem was master-only.