Depending on the installation options this mod would require its own LOD meshes and/or textures.
A quick and simple fix that might be just good enough would be to darken the pre-rendered LOD texture ..\Textures\lod\stonewall01mixlod.dds included in DynDOLOD Resources - Core Files. This will affect the LOD for terraces as well, but still not match the different type of cut stones.
Alternatively darken the LOD nifs for these one by one by adjusting their vertex colors.
I ended up taking that mod's full models and copying them to the lod folder and renaming them to match the lod names then set that mod to overwrite the DynDOLOD Resource files. Seems to be working so far. Probably not as processing friendly as using a lower poly model with a lower res texture but it gets the job done.