Handles.color not working for Handles.PositionHandle

In an effort to make some object handlers a little more user-friendly, I tried to add position handles for each point along an object's given path. It gets a little cluttered when there's a number of points, so I was hoping to hide the points unless the list is expanded (Though that's for another question) and make the handles for the points a different color so it was more obvious which ones were the path, and where they were along the path. I used:

 public class PointFollowPathEditor : Editor 
 {
     public bool showPathHandles = true;
 
     void OnSceneGUI()
     {
         if (showPathHandles) 
         {
             Handles.color = Color.grey;
             //Handles.selectedColor = Color.white;
             PointFollowPath thisTarget = (PointFollowPath)target;
             for (int i = 0; i < thisTarget.Points.Count; i++) 
             {
                 Handles.color = Color.grey;
                 thisTarget.Points [i] = Handles.PositionHandle (thisTarget.Points [i], Quaternion.identity);
             }
         }
         if (GUI.changed)
             EditorUtility.SetDirty (target);
     }
 }

However, the handles are always the standard red/green/blue. Nothing I've done seems to change them to grey. Am I doing something wrong?