How to replace color of sprite with code

[Lefty]

Hello everyone,

Does anyone know how can I replace a certain color X of a sprite to another color Y that I want, using GML?

I don't want to use image_blend, since it will change the entire sprite color, and not only 1 color.

[AlexFzk]

Learn about shaders

free asset on yoyo marktplace:
https://marketplace.yoyogames.com/assets/2482/hue-shader

[Diveyoc]

Is just creating different frames with different sprites in your main sprite an option? That way you could just change the sprite image_index with some code when you want to change colors. Unless your sprite is animated, then this is probably out of the question.
I did this with my main player, so that the player can choose from like 8 different colors at the game start menu.
I messed with image blend a little but likewise, didn't get what I wanted.

[Lefty]

I have found this Asset which makes exactly what I want:

https://marketplace.yoyogames.com/assets/1661/retro-palette-swapper

Thanks all

[Diveyoc]

Oh ya, I think that's by Pixelated_Pope. He has a few good youtube tutorials as well.