diff --git a/bundles/org.eclipse.e4.ui.css.swt/plugin.xml b/bundles/org.eclipse.e4.ui.css.swt/plugin.xml
index 5a16ca7c001..1ad4315b24f 100644
--- a/bundles/org.eclipse.e4.ui.css.swt/plugin.xml
+++ b/bundles/org.eclipse.e4.ui.css.swt/plugin.xml
@@ -494,6 +494,7 @@
        	 <property-name name="category"/>
          <property-name name="label"/>       
          <property-name name="description"/>
+         <property-name name="editable"/>
       </handler>
       <handler
             adapter="org.eclipse.e4.ui.css.swt.dom.definition.FontDefinitionElement"
diff --git a/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/css/swt/properties/definition/CSSPropertyThemeElementDefinitionHandler.java b/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/css/swt/properties/definition/CSSPropertyThemeElementDefinitionHandler.java
index fe33277c796..2e92bbd2a9b 100644
--- a/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/css/swt/properties/definition/CSSPropertyThemeElementDefinitionHandler.java
+++ b/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/css/swt/properties/definition/CSSPropertyThemeElementDefinitionHandler.java
@@ -42,6 +42,8 @@ public class CSSPropertyThemeElementDefinitionHandler implements ICSSPropertyHan
 
 	private static final String MESSAGE_QUERY_PARAM = "message";
 
+	private static final String EDITABLE_PROP = "editable";
+
 	private Map<Long, ResourceBundle> bundleToResourceBundles = new WeakHashMap<>();
 
 	@Override
@@ -65,6 +67,10 @@ public boolean applyCSSProperty(Object element, String property,
 		case DESCRIPTION_PROP:
 			definition.setDescription(getLabel(value));
 			break;
+		case EDITABLE_PROP:
+			Boolean editable = (Boolean) engine.convert(value, Boolean.class, null);
+			definition.setEditable(editable);
+			break;
 		default:
 			return false;
 		}
diff --git a/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/internal/css/swt/definition/IThemeElementDefinitionOverridable.java b/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/internal/css/swt/definition/IThemeElementDefinitionOverridable.java
index 2d7c5424930..37c041e471d 100644
--- a/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/internal/css/swt/definition/IThemeElementDefinitionOverridable.java
+++ b/bundles/org.eclipse.e4.ui.css.swt/src/org/eclipse/e4/ui/internal/css/swt/definition/IThemeElementDefinitionOverridable.java
@@ -27,4 +27,6 @@ public interface IThemeElementDefinitionOverridable<T> {
 	void setName(String name);
 
 	void setDescription(String description);
+
+	void setEditable(Boolean editable);
 }
diff --git a/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/ColorDefinition.java b/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/ColorDefinition.java
index 3a5fcb2b7a8..35e00089bc6 100644
--- a/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/ColorDefinition.java
+++ b/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/ColorDefinition.java
@@ -155,4 +155,10 @@ public void setValue(RGB data) {
 			appendState(State.OVERRIDDEN);
 		}
 	}
+
+	@Override
+	public void setEditable(Boolean editable) {
+		isEditable = editable;
+	}
+
 }
diff --git a/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/FontDefinition.java b/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/FontDefinition.java
index 71c92d402a8..a1d1b077198 100644
--- a/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/FontDefinition.java
+++ b/bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/themes/FontDefinition.java
@@ -138,4 +138,10 @@ public void setValue(FontData[] data) {
 			appendState(State.OVERRIDDEN);
 		}
 	}
+
+	@Override
+	public void setEditable(Boolean editable) {
+		isEditable = editable;
+	}
+
 }