I strongly recommend mud flaps. My little red beetle has a set of the dealer installed basic black flaps. They work. In addition, given their proximity to the tires, they are virtually invisible. I would not recommend using the ones that match the color of the car.
Finally got the Autobaun splash guards installed...simple and real nice fit.
I think they would make a good foundation for soft rally type mud flaps... that would be a good addition if you drive gravel roads alot.
Old & Slow...
Been there, done that.
Cyber Green 99NB TDI