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Hi Paul,<br><br>Maybe late to the show, but another strategy would be to explicitly state the bgcolor in the WMS request that OpenLayers composes like so:<br><br>var wmsmap = new OpenLayers.Layer.WMS(<br>                    "Service name",<br>                    url,<br>                    {<br>                        width: '600',<br>                        height: '512',<br>                        srs: 'EPSG:28992',<br>                        layers: 'Dutch provinces',<br>                        styles: '',<br>                        format: 'image/png',<br>                        bgcolor: '0x8FCAE7'<br>                    },<br>                    {<br>                        singleTile: true,<br>                        ratio: 1,<br>                        attribution: '&copy; 2009 Kadaster',<br>                        visibility: true,<br>                        isBaseLayer: true<br>                    }<br>);<br><br>Hope someone can benefit from this as well.<br><br>Cheers,<br><br>Edward<br>                                           </body>
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