I am trying to figure out how one can select an area and get a grayscale as a result. But I don't even know what to do with the grayscale.
I have created a simple gradient, to create an example for this question.
And I want to turn it into this gradient.
This would be straight forward, you'd just swap the red channel with the blue channel.
Yes, this would be that. But what I want to obtain from this question, is to figure out an alternative way.
Modifying the Channels directly, seems destructive if you have something entirely different.
What if there wasn't only green, but also yellow and you want to turn the red accurately into blue?
This is why I want to figure out a different method, that solves that question.
I have tried taking the red mask, and tried to do Layer Blending with a RGB (0, 0, 255) color (full blue).
But it's not giving the output at all, and still keeps red.
What is the way, that focuses on the question regarding what if there would be yellow or any other color? (If you have an answer that isn't destructive for the one without the yellow then it answers the question as well)
Like, turning this:
but not destructive, or just a section of it by using a mask
This question should aim for solving situations where you want to colorize something and manually selecting the area. And a color could be overlapping with another. If you'd fully put a white pixel in the mask, the colorize strenght would be more than what it is on the original image.