land color is gray intsead of white(?)

General talk
1

Greetings,
I have installed an OSM server with mapnik2 and mod_tile. I converted the osm.xml and all the inc/*xml files. However, all of my landmass is dark gray:

http://www.eol.ucar.edu/~cjw/mc.png

Any pointers to follow?

Thanks,
Chris