diff --git a/rogueviz/sag/data.cpp b/rogueviz/sag/data.cpp
index eda2d2d9..654761eb 100644
--- a/rogueviz/sag/data.cpp
+++ b/rogueviz/sag/data.cpp
@@ -462,6 +462,10 @@ int data_read_args() {
     create_viz();
     }
 
+  else if(argis("-sag-colorpartite")) {
+    colorpartite = true;
+    if(state & SS_DATA) prepare_graph();
+    }
 
   else return 1;  
 #endif