Setting all fill patterns to their own layer when exporting to DWG

[jack_coleMVS8P]

Is it possible to export all hatches (fill/model patterns) to their own layer when exportign from Revit to Autocad. At the moment they are getting a full black fill because I've set the line colours to turn black when exporting.

See image attached.

Thanks, 

Revit below

DWG Export below 

[vitorbortoncello]

specify colors