[cl-pdf-devel] Producing a png with transparent background for use in pdf

[Mitch Berkson]

> How can I modify my png to have a transparent color without using the 
> alpha channel? Thank you.

After some more looking, I found this description of how to use the GIMP 
to make a transparent png image using indexed color:

http://mcapewell.wordpress.com/2006/09/07/how-to-make-a-transparent-png-image-for-ie-6-in-the-gimp/

Mitch Berkson