Hi Christoph, I agree this looks wrong. The reason is that mkgmap renders the tag place=island from this multipolygon relation: https://www.openstreetmap.org/relation/7112309 as type 0x53 and some programs interpret this as "Sandbank, tidal/mud flat" The rule is in style fie polygons: place=island & name=* [0x53 resolution 19] I think we should try to find a different type or decide to ignore the tag for large polygons. We have the same problem with other large islands like Ireland. There is only one advantage of rendering the polygon: The name "Corse" is shown when you click somewhere. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Christoph Karl <pampelmuse@gmx.at> Gesendet: Samstag, 19. August 2017 09:37:11 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: [mkgmap-dev] Colouring of island not correct Hi! I tried to generate a gmapsupp.img with mkgmap. I have done this with: /usr/java/jdk1.8.0_144/bin/java -Xmx8G -jar ./mkgmap-r3993/mkgmap.jar -- gmapsupp karten/corse-latest.osm.pbf But the colouring of the landscape is not correct. See "corse_wrong_colour.png" Compared to "bremen_correct.png" Screenshots are made from qlandkartegt Version 1.8.1. I also tried to use "--precomp-sea=./karten/sea.zip", but this just colours the surrounding sea. Do you have any ideas? Thank you Best Regards Christoph