Hm I dont think so, there are no textures, but materials. So if you want to modify a textures, u need to recreate a normal maps, height maps and possibly other specific maps to do so, and than bake it back in the material and that to the DFMOD. What textures you dont enjoy specifically? Are you able to do the abovementioned process?
If you provide some bad ass texture, I might consider updating the DREAM with it and create the rest of the supporting maps and materials from it etc
we can discuss, but u need to be more specific