Index: src/java/org/apache/fop/afp/ioca/IDEStructureParameter.java
===================================================================
--- src/java/org/apache/fop/afp/ioca/IDEStructureParameter.java	(revision 907977)
+++ src/java/org/apache/fop/afp/ioca/IDEStructureParameter.java	(working copy)
@@ -46,7 +46,7 @@
     private boolean grayCoding = false;
 
     /** the image color model */
-    private byte colorModel = COLOR_MODEL_RGB;
+    private byte colorModel = COLOR_MODEL_YCRCB;
 
     /** the array with the number of bits/IDE for each component */
     private byte[] bitsPerIDE = new byte[] {(byte)1}; //1-bit by default