Drag a Shadded sphere along the path.
Are these lines supposed to be static, or also animate?
Rather than dragging a sphere (which would mean hundreds or thousands of sprites needing to be drawn), it might be the easiest to actually make sprite(s) that just contain a picture of (part of) the wobbly line, and rotate those at the correct angles. That way you can get the same effect with drawing just a couple of sprites which is bound to be significantly faster than dragging a sphere.