diff --git a/src/main/java/org/olat/core/util/openxml/OpenXMLDocument.java b/src/main/java/org/olat/core/util/openxml/OpenXMLDocument.java
index 08020e0342b28101acc4b4187ae9ca763a7da119..319c22c0c9738a2acad5d300e25ee367ede5c40c 100644
--- a/src/main/java/org/olat/core/util/openxml/OpenXMLDocument.java
+++ b/src/main/java/org/olat/core/util/openxml/OpenXMLDocument.java
@@ -1435,10 +1435,10 @@ public class OpenXMLDocument {
 			appendGraphicEllipse(spPrEl, size, element);
 		}
 	
-		appendGraphicSolidFill(spPrEl, element.getStyle());
+		appendGraphicSolidFill_transparent(spPrEl, element.getStyle());
+		//spPrEl.appendChild(document.createElement("a:noFill"));
 		Element lnEl = (Element)spPrEl.appendChild(document.createElement("a:ln"));
 		lnEl.setAttribute("w", "38100");
-		//spPrEl.appendChild(document.createElement("a:noFill"));
 		spPrEl.appendChild(document.createElement("a:effectLst"));
 
 		//styles
@@ -1455,22 +1455,16 @@ public class OpenXMLDocument {
 	/*
 	<a:solidFill>
 		<a:schemeClr val="accent3">
-			<a:lumMod val="60000" />
-			<a:lumOff val="40000" />
 			<a:alpha val="63000" />
 		</a:schemeClr>
 	</a:solidFill>
 	*/
-	private void appendGraphicSolidFill(Element parentEl, OpenXMLGraphic.Style style) {
+	private void appendGraphicSolidFill_transparent(Element parentEl, OpenXMLGraphic.Style style) {
 		Element solidFillEl = (Element)parentEl.appendChild(document.createElement("a:solidFill"));
 		Element schemeClrEl = (Element)solidFillEl.appendChild(document.createElement("a:schemeClr"));
 		schemeClrEl.setAttribute("val", style.name());
-		
-		/*Element lumModEl = (Element)solidFillEl.appendChild(document.createElement("a:lumMod"));
-		lumModEl.setAttribute("val", "60000");
-		Element lumOffEl = (Element)solidFillEl.appendChild(document.createElement("a:lumOff"));
-		lumOffEl.setAttribute("val", "60000");*/
-		Element alphaEl = (Element)solidFillEl.appendChild(document.createElement("a:alpha"));
+
+		Element alphaEl = (Element)schemeClrEl.appendChild(document.createElement("a:alpha"));
 		alphaEl.setAttribute("val", "50000");
 	}
 	
@@ -1615,11 +1609,11 @@ public class OpenXMLDocument {
 		return filename;	
 	}
 	
-	private String generateId() {
+	protected String generateId() {
 		return "rId" + (++currentId);
 	}
 	
-	private String generateSimpleId() {
+	protected String generateSimpleId() {
 		return Integer.toString(++currentId);
 	}
 
diff --git a/src/main/java/org/olat/core/util/openxml/OpenXMLDocumentWriter.java b/src/main/java/org/olat/core/util/openxml/OpenXMLDocumentWriter.java
index 324b102ade404bf118d70bb1ebff98c001120dd2..46bf8eeef7a6d02e1481c7931148fec7c3e10954 100644
--- a/src/main/java/org/olat/core/util/openxml/OpenXMLDocumentWriter.java
+++ b/src/main/java/org/olat/core/util/openxml/OpenXMLDocumentWriter.java
@@ -67,6 +67,7 @@ public class OpenXMLDocumentWriter {
 	public static final String CT_NUMBERING = "application/vnd.openxmlformats-officedocument.wordprocessingml.numbering+xml";
 	public static final String CT_STYLES = "application/vnd.openxmlformats-officedocument.wordprocessingml.styles+xml";
 	public static final String CT_HEADER = "application/vnd.openxmlformats-officedocument.wordprocessingml.header+xml";
+	public static final String CT_THEME = "application/vnd.openxmlformats-officedocument.theme+xml";
 	
 	
 	public void createDocument(ZipOutputStream out, OpenXMLDocument document)
@@ -102,7 +103,7 @@ public class OpenXMLDocumentWriter {
 		//word/media
 		appendMedias(out, document);
 		
-		/* word/theme/theme1.xml
+		// word/theme/theme1.xml
 		out.putNextEntry(new ZipEntry("word/theme/theme1.xml"));
 		try(InputStream in = OpenXMLDocumentWriter.class.getResourceAsStream("_resources/theme1.xml")) {
 			IOUtils.copy(in, out);
@@ -110,7 +111,6 @@ public class OpenXMLDocumentWriter {
 			log.error("", e);
 		}
 		out.closeEntry();
-		*/
 		
 		//word/numbering
 		ZipEntry numberingDocument = new ZipEntry("word/numbering.xml");
@@ -234,6 +234,10 @@ public class OpenXMLDocumentWriter {
 							headerRef.getFilename(), writer);
 				}
 			}
+			
+			addRelationship(document.generateId(), "http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme",
+					"theme/theme1.xml", writer);
+
 
 			writer.writeEndElement();// end Relationships
 			writer.writeEndDocument();
@@ -375,11 +379,12 @@ public class OpenXMLDocumentWriter {
 			createContentTypesOverride("/word/document.xml", CT_WORD_DOCUMENT, writer);
 			createContentTypesOverride("/word/styles.xml", CT_STYLES, writer);
 			createContentTypesOverride("/word/numbering.xml", CT_NUMBERING, writer);
+			createContentTypesOverride("/word/theme/theme1.xml", CT_THEME, writer);
 			
 			for(HeaderReference headerRef:document.getHeaders()) {
 				createContentTypesOverride("/word/" + headerRef.getFilename(), CT_HEADER, writer);
 			}
-			
+
 			writer.writeEndElement();// end Types
 			writer.flush();
 			writer.close();