Best way to recolor this image

[rich2005]

(01-31-2026, 10:42 PM)IndiePubber Wrote:

(01-31-2026, 08:30 AM)rich2005 Wrote: Ahhh.....no

You get a layer mask from Layers -> Mask -> Add Layer Mask https://docs.gimp.org/2.8/en/gimp-layer-mask-add.html

...and that acts on the layer it is attached to.

*sigh*


I thought that's what I did. At least, I clicked on "Add Layer Mask" from the Layers menu. Then, if I remember right, I desaturated the original to get a start on it. I guess I can't do that?

And there's no way to attach this layer I've called "Mask" to the layer it's supposed to be acting on?



*Starts slogging away at it all over again*

The wrong way round.  
With the layer active, make your selection and for that building fascia it is .. using colour select  (or any other way)
Now go to Layer -> Mask -> Add Layer Mask  and choose Selection   The layer mask is greyscale, no need to desaturate anything.

Just experiment, one minute, make two layers, draw in a selection. Top layer active, add a layer mask. (see previous screenshot)