Isocurve colour

I can adjust the tonal value of the edges in ghosted mode but I can’t find a setting to do it with the isocurves. Is this possible in v5?

You can set the color, if that’s what you want:
Rhino Options > View > Display Modes > [your mode] > Objects > Surfaces > Surface Isocurve Settings > Isocurve color usage

hello wim
Thanks for the reply but not what I was looking for. I was hoping for something more universal like the edge setting, where the colour stays the same as the surface but can be darkened by percentage.

ISTR that this has been requested before, but doesn’t look like it has been implemented in the current WIP… I actually don’t see a youtrack item for it (or maybe I didn’t find it).