diff --git a/Eve-O-Preview/Configuration/IThumbnailConfig.cs b/Eve-O-Preview/Configuration/IThumbnailConfig.cs
index 0bb27fa..d563629 100644
--- a/Eve-O-Preview/Configuration/IThumbnailConfig.cs
+++ b/Eve-O-Preview/Configuration/IThumbnailConfig.cs
@@ -32,6 +32,7 @@ namespace EveOPreview.Configuration
 
 		bool EnableActiveClientHighlight { get; set; }
 		Color ActiveClientHighlightColor { get; set; }
+		int ActiveClientHighlightThickness { get; set; }
 
 		Point GetThumbnailLocation(string currentClient, string activeClient, Point defaultLocation);
 		void SetThumbnailLocation(string currentClient, string activeClient, Point location);
diff --git a/Eve-O-Preview/Configuration/ThumbnailConfig.cs b/Eve-O-Preview/Configuration/ThumbnailConfig.cs
index 1a56251..dd53fbf 100644
--- a/Eve-O-Preview/Configuration/ThumbnailConfig.cs
+++ b/Eve-O-Preview/Configuration/ThumbnailConfig.cs
@@ -32,7 +32,8 @@ namespace EveOPreview.Configuration
 			this.ShowThumbnailFrames = true;
 
 			this.EnableActiveClientHighlight = false;
-			this.ActiveClientHighlightColor = Color.Yellow;
+			this.ActiveClientHighlightColor = Color.GreenYellow;
+			this.ActiveClientHighlightThickness = 3;
 
 			this.PerClientLayout = new Dictionary<string, Dictionary<string, Point>>();
 			this.FlatLayout = new Dictionary<string, Point>();
@@ -82,6 +83,8 @@ namespace EveOPreview.Configuration
 		}
 		private Color _activeClientHighlightColor;
 
+		public int ActiveClientHighlightThickness { get; set; }
+
 		[JsonProperty]
 		private Dictionary<string, Dictionary<string, Point>> PerClientLayout { get; set; }
 		[JsonProperty]
@@ -181,6 +184,7 @@ namespace EveOPreview.Configuration
 				ThumbnailConfig.ApplyRestrictions(this.ThumbnailSize.Height, this.ThumbnailMinimumSize.Height, this.ThumbnailMaximumSize.Height));
 			this.ThumbnailOpacity = ThumbnailConfig.ApplyRestrictions((int)(this.ThumbnailOpacity * 100.00), 20, 100) / 100.00;
 			this.ThumbnailZoomFactor = ThumbnailConfig.ApplyRestrictions(this.ThumbnailZoomFactor, 2, 10);
+			this.ActiveClientHighlightThickness = ThumbnailConfig.ApplyRestrictions(this.ActiveClientHighlightThickness, 1, 3);
 		}
 
 		private static int ApplyRestrictions(int value, int minimum, int maximum)
diff --git a/Eve-O-Preview/Presentation/ThumbnailManager.cs b/Eve-O-Preview/Presentation/ThumbnailManager.cs
index 5ba49e2..9888953 100644
--- a/Eve-O-Preview/Presentation/ThumbnailManager.cs
+++ b/Eve-O-Preview/Presentation/ThumbnailManager.cs
@@ -137,7 +137,8 @@ namespace EveOPreview.UI
 
 				view.IsOverlayEnabled = this._configuration.ShowThumbnailOverlays;
 
-				view.SetHighlight(this._configuration.EnableActiveClientHighlight && (view.Id == this._activeClientHandle), this._configuration.ActiveClientHighlightColor, 3);
+				view.SetHighlight(this._configuration.EnableActiveClientHighlight && (view.Id == this._activeClientHandle),
+										this._configuration.ActiveClientHighlightColor, this._configuration.ActiveClientHighlightThickness);
 
 				if (!view.IsActive)
 				{
diff --git a/Eve-O-Preview/UI/Implementation/ThumbnailView.cs b/Eve-O-Preview/UI/Implementation/ThumbnailView.cs
index cde6534..4c8c2be 100644
--- a/Eve-O-Preview/UI/Implementation/ThumbnailView.cs
+++ b/Eve-O-Preview/UI/Implementation/ThumbnailView.cs
@@ -329,9 +329,9 @@ namespace EveOPreview.UI
 
 					int actualHeight = baseHeight - 2 * this._highlightWidth;
 					double desiredWidth = actualHeight * baseAspectRatio;
-					int actualWidth = (int)Math.Round(desiredWidth);
-					int highlightWidthLeft = Math.Min(5, (baseWidth - actualWidth) / 2);
-					int highlightWidthRight = Math.Min(5, baseWidth - actualWidth - highlightWidthLeft);
+					int actualWidth = (int)Math.Round(desiredWidth, MidpointRounding.AwayFromZero);
+					int highlightWidthLeft = Math.Min(4, (baseWidth - actualWidth) / 2);
+					int highlightWidthRight = Math.Min(4, baseWidth - actualWidth - highlightWidthLeft);
 
 					this._overlay.SetHighlightWidth(highlightWidthLeft, this._highlightWidth, highlightWidthRight, this._highlightWidth);
 					this._thumbnail.rcDestination = new RECT(0 + highlightWidthLeft, 0 + this._highlightWidth, actualWidth + highlightWidthLeft, actualHeight + this._highlightWidth);