Change color for mapnik

Hello, I tried to change color for main layer of my map (ground without object). In /etc/mapnik-osm-data/osm.xml I change bgcolor = RGB to my value and color of the sea and ocean was like I expect. Help me find the tag that can change the color not only for sea and ocean, but for all ground. Thanks:)

The ground is rendered in the file in the inc subdirectory:

<Style name="world">
<Style name="coast-poly">

depending on the zoom-level.


Tnanks, all work fine