[Mapserver-users] transparent symbols (images)

[Christina Biakowski]

Dear list,
to display points on a map we use png-images as symbols. Now the
white-colored pixels (RGB 255 255 255) of the symbols get transparent on the
map, though the IMAGECOLOR in the MAP-section is set to a RGB value other
than 255 255 255. (MapServer-Versions 3.6.6 and 4.0).
Any idea how to get the "white parts" of the symbols non-transparent
(without preceding image processing)?

Best regards,
Christina