A. HENKET Could it be that you inadvertently call xmlverbatim.xsl instead of xmlverbatimwrapper.xsl, because I'm not seeing colors, just the xml. Without the stylesheets inside xmlverbatimwrapper.xsl, the div and span tags and their classes are not displayed correctly.
MITEN I can't see the colors either, but don't know enough about it to help find the problem.
I like being able to view the XML anyway, though, and look forward to seeing the colors when you have a moment to track down the problem. (Version 1.0)