diff --git a/editor.js b/editor.js
index 877cfc7..884af38 100644
--- a/editor.js
+++ b/editor.js
@@ -678,6 +678,7 @@ const edgeColourHighlightDefault = '#6ed4d4';
 const edgeColourHighlightSelected = 'magenta';
 const edgeColourSubtleDefault = '#99999955';
 const edgeColourSubtleSelected = '#00000055';
+const edgeColourMostSubtle = '#99999944';
 
 /**
  * 
@@ -704,18 +705,24 @@ function getNodeColour(node) {
   }
 }
 
-function isHighlightedEdge(edge) {
-  var data = edge.actionData
-  var isViewer    = data.viewerNames.includes(selectedViewer.value)
-  var isActor     = data.mode != 'automatic' && data.actorNames.includes(selectedActor.value)
-  var isActorAuto = data.mode == 'automatic' && highlightedTargets.includes(edge.source.id)
-  return isViewer || isActor || isActorAuto;
+function isHighlightedActorEdge(edge) {
+  var data = edge.actionData;
+  var isActor     = data.mode != 'automatic' && data.actorNames.includes(selectedActor.value);
+  var isActorAuto = data.mode == 'automatic' && highlightedTargets.includes(edge.source.id);
+  return isActor || isActorAuto;
+}
+
+function isHighlightedViewerEdge(edge) {
+  var data = edge.actionData;
+  return data.viewerNames.includes(selectedViewer.value);
 }
 
 function getEdgeColour(edge) {
   var isSelected = selection === edge || rightSelection === edge;
-  if (isHighlightedEdge(edge)) {
+  if (isHighlightedActorEdge(edge)) {
     return isSelected ? edgeColourHighlightSelected : edgeColourHighlightDefault;
+  } else if (selectedViewer.value !== NO_VIEWER && !isHighlightedViewerEdge(edge)) {
+    return isSelected ? edgeColourSubtleDefault : edgeColourMostSubtle;
   } else if (selectedActor.value !== NO_ACTOR) {
     return isSelected ? edgeColourSubtleSelected : edgeColourSubtleDefault;
   } else {
@@ -810,10 +817,10 @@ function getEdgeColour(edge) {
       context.restore();
     })
     .linkLineDash(edge => edge.actionData.mode == 'automatic' && [2, 3]) //[dash, gap]
-    .linkWidth(edge => (((edge === selection || edge === rightSelection) ? 1 : 0) + (isHighlightedEdge(edge)) ? 3 : 1))
+    .linkWidth(edge => (((edge === selection || edge === rightSelection) ? 2 : 0) + (isHighlightedActorEdge(edge) || isHighlightedViewerEdge(edge)) ? 4 : 1))
     .linkDirectionalParticles(2)
     .linkDirectionalParticleColor(() => '#00000055')
-    .linkDirectionalParticleWidth(edge => (isHighlightedEdge(edge)) ? 3 : 0)
+    .linkDirectionalParticleWidth(edge => (isHighlightedActorEdge(edge)) ? 3 : 0)
     .nodeCanvasObject((node, ctx) => {
       ctx.fillStyle = getNodeColour(node);
       ctx.beginPath();