Did you use Gimp for the colour replacement in the attachment? My new thought is to use the skyline silhouette as a mask but my understanding is that I must be able to convert it to a uniform grey scale first.

Many thanks again.

Many thanks.

I'm not sure. :-) I was thinking of combining this shape, in some fashion, with another image -- either as a translucent colour, an outline, or some kind of a mask. I was just trying to play around with those options when I ran into the issue of trying to substitute colours. I am familiar with Gimp ...

Here it is.

Many thanks. It did seem like others had solved this problem in Inkscape but, of course, I couldn't replicate the apparent solutions.

I have imported a PNG file with a transparent background that has a single, solid black shape. I cannot figure out how to replace the black with another colour. I have gone to Extensions-->Color-->Replace color and tried to replace 000000 with other hex values and, while the dialog says "Replac...