https://www.posetteforever.com/viewtopic.php?f=1&t=3835&p=44467#p44467
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Chromium
Friday, 03 January 2014, 05:52 PM

Re: Flash Animated Video
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Recently I went back to school, and learned you can have a background transparency layer in an animated GIF...

I was playing around with Beneton (see reference above).

When you are ready to put all the frames together to make your animated GIF, you are prompted also if you would like to set a transparency colour (i.e. your background colour in your frames).

It seems the old Compuserve GIF, format has been updated since 87', and I never kept up with the changes (shakes head in shame)...