Shaders image indexer and palette shader?

[Shadowblitz16]

I'm looking for a palette shader that takes a image indexes it to a defined amount of colors and can color swap out colors on the fly;
however I can't find a free one

 

[Xor]

I made one which is available for free. It uses the red channel of the sprite to set a palette index which can shifted by a uniform variable. Here's how it looks:
https://pbs.twimg.com/tweet_video/CoU1Y88W8AA0I5E.mp4
Let me know if you have any questions.

 

[Pixelated_Pope]

Mine is free (download link in the thread linked in my signature)