How to change the foreground color of animated GIF image using PHP???

[rahulephp]

From last few days I am struggling to achieve this.

 

For some reason, we need to change the Foreground (display) color of animated gif images without losing their animation.

I am sure there should be some ways to do thing but i couldn't able to find that.

A website ajaxload[dot]info is doing approximately same thing but I am not sure how they got this using PHP.

 

Can anyone suggest the similar kind of PHP script to change the color of gif images??

 

Thanks in advance

 

[xyph]

This may help

http://valokuva.org/?p=46