Showcase Project – trouble with unwanted border on transparent gifs

I’ve been getting this really annoying white border around my transparent gifs:


Thankfully I found the tutorial at which is explained that the issue can be resolved by specifying the colour of the background that it is being placed against in the “matte” field when saving.  And it works!  Hurrah.



The only problem with this is that it affects the transparent gradients on the beams of light, so its back to the drawing board with regards to that element….