Small improvement of the OFM Europe typ file. In the old version the transparent background is displayed black in night & marine mode, in the improved version (attached below) this is fixed. I won't upload a whole new version of Europe, just simply replace the typ file below with the original.

With a typ file editor (typviewer or ati.land.cz) you can also change the transparent background polygon (type 0x10200) with the default 'OFM green' (#D8F7BA) but this may have a negative impact on the rendering of contour lines in Mapsource.