diff --git a/Ghidra/Debug/Debugger/src/test/java/ghidra/app/plugin/core/debug/gui/listing/DebuggerListingProviderTest.java b/Ghidra/Debug/Debugger/src/test/java/ghidra/app/plugin/core/debug/gui/listing/DebuggerListingProviderTest.java
index 66b42e87e6..b48d7ecb3c 100644
--- a/Ghidra/Debug/Debugger/src/test/java/ghidra/app/plugin/core/debug/gui/listing/DebuggerListingProviderTest.java
+++ b/Ghidra/Debug/Debugger/src/test/java/ghidra/app/plugin/core/debug/gui/listing/DebuggerListingProviderTest.java
@@ -34,7 +34,6 @@ import docking.menu.MultiStateDockingAction;
 import docking.widgets.EventTrigger;
 import docking.widgets.fieldpanel.FieldPanel;
 import generic.test.category.NightlyCategory;
-import generic.test.rule.Repeated;
 import generic.theme.GThemeDefaults.Colors;
 import ghidra.app.plugin.assembler.*;
 import ghidra.app.plugin.core.codebrowser.CodeBrowserPlugin;
diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java
index c29acf8e2c..5746e7305e 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java
@@ -39,6 +39,7 @@ import ghidra.program.model.address.Address;
 import ghidra.program.model.address.AddressSet;
 import ghidra.program.model.listing.Program;
 import ghidra.program.util.ProgramLocation;
+import ghidra.util.ColorUtils.ColorBlender;
 import ghidra.util.datastruct.*;
 import ghidra.util.exception.AssertException;
 import ghidra.util.task.SwingUpdateManager;
@@ -491,6 +492,7 @@ public class MarkerManager implements MarkerService {
 	private static class MarkerSetCacheEntry {
 		private final List<MarkerSetImpl> markerSets = new ArrayList<>();
 		private final AddressColorCache colorCache = new AddressColorCache();
+		private final ColorBlender blender = new ColorBlender();
 
 		private final MarkerSetCache cache;
 		private final Program program;
@@ -582,15 +584,16 @@ public class MarkerManager implements MarkerService {
 			if (colorCache.containsKey(address)) {
 				return colorCache.get(address);
 			}
-			for (MarkerSetImpl markers : IterableUtils.reversedIterable(markerSets)) {
+			blender.clear();
+			for (MarkerSetImpl markers : markerSets) {
 				if (markers.isActive() && markers.isColoringBackground() &&
 					markers.contains(address)) {
-					Color color = markers.getMarkerColor();
-					colorCache.put(address, color);
-					return color;
+					blender.add(markers.getMarkerColor());
 				}
 			}
-			return null;
+			Color color = blender.getColor(null);
+			colorCache.put(address, color);
+			return color;
 		}
 
 		List<String> getTooltipLines(int y, int x, Address minAddr, Address maxAddr) {
diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/services/MarkerService.java b/Ghidra/Features/Base/src/main/java/ghidra/app/services/MarkerService.java
index d2a4488684..2b249f667c 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/services/MarkerService.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/services/MarkerService.java
@@ -48,7 +48,9 @@ import ghidra.program.model.listing.Program;
  * a program has become deactivated. In this example usage markers are added and removed as the user
  * tabs through open programs.
  */
-@ServiceInfo(defaultProvider = MarkerManagerPlugin.class, description = "Service to manage navigation markers displayed around a scrollable window.")
+@ServiceInfo(
+	defaultProvider = MarkerManagerPlugin.class,
+	description = "Service to manage navigation markers displayed around a scrollable window.")
 public interface MarkerService {
 
 	/**
@@ -241,8 +243,8 @@ public interface MarkerService {
 
 	/**
 	 * Returns the background color associated with the given program and address. Each markerSet
-	 * that supports background coloring is checked in priority order to see if it wants to specify
-	 * a background color for the given address.
+	 * that supports background coloring is blended to determine a background color for the given
+	 * address.
 	 *
 	 * @param program the program to check for a background color.
 	 * @param address the address to check for a background color.
diff --git a/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/marker/MarkerTest.java b/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/marker/MarkerTest.java
index 3f897f2b04..da33528ed4 100644
--- a/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/marker/MarkerTest.java
+++ b/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/marker/MarkerTest.java
@@ -423,7 +423,7 @@ public class MarkerTest extends AbstractGhidraHeadedIntegrationTest {
 			return markerService.getBackgroundColor(p, address);
 		});
 
-		assertEquals("Marker color not correct", c, actual);
+		assertEquals("Marker color not correct", c.getRGB(), actual.getRGB());
 	}
 
 	private void switchToProgram(Program p) {