title: PDF-file thumbnails are shown in wrong color
body: <p>On a page (TYPO3 Website, ext.: ImageMagick) I want to show thumbnails of available/downloadable pdf-files (always 1st page of the pdf-file as thumbnail). The problem is that the thumbnails (*.gif but I also tried *.jpg and *.png) are created in 'wrong colors', I mean they differ from the pdf content itself (Thumbnails: dark blue color is shown in light blue).</p>
  
  <p>Does anyone has an idea? </p>