Hi,
I fixed an issue that was noticed once geany-themes switched to the styling group copying stuff added in r5596[1]. If the user config files are using named styles with different names from the system ones, then only copying the styling group from the system file means that some of the user's colour scheme named styles won't be used and the result is some stuff not being colourized.
Attached is a patch to fix this.
[1] http://geany.svn.sourceforge.net/viewvc/geany?view=revision&revision=559...
Cheers, Matthew Brush