How would I search for an image on the screen and click on coordinates relative to it?

[kittyguy14]

I want to be able to look for if this image is on the screen and click on it (slightly off-centered on the Y axis because the button is nearer to the bottom of the image)
the button and background can be a different color too, so if possible could it just search for a similar image? or would I have to input every possible combination of colors

[kittyguy14]

If this isn't possible just searching for the button part and clicking on that would work too.