OptionalfillOptionallineOptionallineDraped line dash pattern (line-widths), e.g. [2, 2]; omitted = solid.
OptionallineDraped line opacity 0–1 (default 1). A tool that draws its own 3D line passes a low value so the ground track reads as a subtle shadow, not the measurement.
OptionallineDraped line width in px (default 2.5).
Optionalvertex
Colors + line style for the overlay (straight CSS colors).