Diminish the thickness and transparency of factors in rviz

yaml/demo_visual_odometry_euroc.yaml

@@ -67,6 +67,8 @@ config:
       frame_width: 0.01
       frame_length: 0.1
       frame_vel_scale: 1.0
+      factors_width: 0.01
+      factor_lmk_color: [0, 1, 1, 0.005]
 
     # -
     #   type: "PublisherTf"