While importing images in bulk, I find that about 20% of the (jpg) images are giving problems.
If you view them in original size They look ok, but if you filter them through the imaging servlet it goes wrong.

1 I uploaded the attached image to
documents -> /vpro/untitled1

2 I open the dialog on //vpro/untitled1/34348371 The image thumb looks ok: url http://localhost:8080/dms/vpro/untitled1/34348371/34348371.jpg is to the full image, resizing is in page.

3 I request the image through the imaging pipeline, and the colors are inverted: http://localhost:8080/.imaging/stk/pip/content-small/dms/vpro/untitled1/34348371/document/34348371.jpg

This way the bug should be reproducible.