Better Terrain Texturing Method

Hey,

I am creating my own terrain with the Terrain Toolkit and I really like the function, where you can specify several heights for different textures. It is particulary helpful with cliffs, so you dont have to paint them manualy.

But my problem is: I need to paint some routes/paths on the terrain so that the player knows where to go. But when I made a mistake while painting, I have to start again painting, because I cannot restore the old/correect texture for that part of terrain.

So my question is: Is there a better tool to draw routes/paths on the terrain than with the standard terrain deformation/painting tool?