[OpenLayers-Users] Change the background color of the WMS layer

[Jehanzeb Orakzai]

Hi,

I have a problem with my with WMS Layer:
 
I have a raster image in tif format. When I overlay it in the map, A
black background builds at the null-value-area. Now in the map it is also 
shown as black and annoys the visual appearance. Is it possible to 
switch it into transparent? 
 
I have tried to change the opacity and transparent:true in the layer params, but it does'nt work.

(I am using GeoServer and OpenLayers)

Any help is appreciated.

 
Thank you,
--
Jehanzeb


      
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