How to modify the line color of LineWidget？

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1

When using LineWidget for line measurement, there is no way to modify the color of the lines, and the colors of rectangles and circles are different from it.
How should I handle this issue?

2

First, prefer vtkLineWidget2 over `vtkLineWidget. Then use vtkLineRepresentation::GetLineProperty to access and change properties like color, line width, etc. for the line.