I guess you should have in mind that the purpose of this filter is to produce a "cartographical" look.
This is taken from the comment of the original author:
"This script will take a heightmap, given by a greyscale layer that
the user selects, and draw many contour lines of it on the active layer.
There is support for different brush sizes, hardnesses, spacing, smoothing,
differing low and high bounds, and adding a double-weight line every so often.."
It's not an "artistical" filter.
I tought you just wanted to see the lines in a different color(s), instead of pure black. That's possible.
My fault not to say it in advance and to use a flower image as an example of the effect, instead of an aerial view of a territory, which would have been more suitable.
Just a misunderstanding.
This is taken from the comment of the original author:
"This script will take a heightmap, given by a greyscale layer that
the user selects, and draw many contour lines of it on the active layer.
There is support for different brush sizes, hardnesses, spacing, smoothing,
differing low and high bounds, and adding a double-weight line every so often.."
It's not an "artistical" filter.
I tought you just wanted to see the lines in a different color(s), instead of pure black. That's possible.
My fault not to say it in advance and to use a flower image as an example of the effect, instead of an aerial view of a territory, which would have been more suitable.
Just a misunderstanding.