[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2017-01-20.12:17:07]

The problem was that the "R" and the "B" color channels were swapped when decoding images using OpenSlide.

This is fixed by the following changelist:
https://hg.orthanc-server.com/orthanc-wsi/changeset/16b8e1cc9bbfeec5c2cd4e601e6259edec5a0d85