Robert Funnell wrote:
From looking at .svg files and at the SVG spec, I have the impression
that what I'm asking for is impossible at the level of the file format, much less the GUI. Is that correct? Is it likely that SVG might ever have such a capability?
Yes and no. Doing it exactly as you want to do it is impossible. I don't think any vector application (Illustrator, Corel) lets you colour individual segments of a single stroke.
But there's more than one way to skin a cat. You could draw your shape and duplicate it. Fill one with yellow and give the other a stroke. The stroked one you could then easily break each node and use "Break apart" to create idividual strokes that you can colour.
IF you want to avoid breaking the path then create a clip and draw coloured shapes where you want the path to be coloured.