To a computer, a color is just a number, which represents the amount of red, green and blue in the image.
To understand this effects, you need to understand how the computer sees colors. You can see some examples in this older blog article where I also touch briefly on this effect, but today I’m going to explain it in a bit more detail. The effect itself is just a basic color-replacement effect, but all those text fields with numbers can look quite a bit daunting when you open it up for the first time, but you can use it to make some nice results. I this article, I’ll dive a bit more into this effect and describe it in a bit more detail. In my latest live stream, I did use the RGB Matrix Process effect quite a lot for changing the colors of fills ans symbols.