I created another particle set that interacts with a turbulence force field with the flow parameter set. This time I used the bTrace addon to trace 500 particles and create the purple particle trails. The bTrace addon creates the curves by stepping through all frames, taking the particle position and adding a new vertex to the curve.
I copied the purple material to all curves by selecting them and selecting Ctrl-L and "Material"
you can download the blend file here
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