GifCreator and global color palette?

[goodwin74]

There is a problem in GifCreator. In some gifs, the colors blink. Looking for problems on the Internet and studying the contents of GIF files, I realized that this is a problem because the imagegif() creates each frame with its own color palette. And so the colors of each frame change, and you get the effect of flickering colors.
This problem is solved as follows: create a global color palette for the entire animated GIF.

@skwi How can this be done in GifCreator?