SprayGen can make things such as Fading sprays and Animated sprays.
NOTE: This aint done by me, but since this wasn't on Gamebanana I decided to upload it anyway.
Description: This python project takes an animated .gif (or multiple single images) as the input and outputs an animated .vtf spray using the vtex compiler in the source SDK.
uses imagemagick to split the .gif files into .tga files. resizes the images appropriately, calls the vtex compiler.