import lotus.domino.*;

public class JavaAgent extends AgentBase {

 public void NotesMain() {

   try {
     Session session = getSession();
     AgentContext agentContext = session.getAgentContext();

     // (Your code goes here)
     DocumentCollection dc = agentContext.getUnprocessedDocuments();
     Document doc = dc.getFirstDocument();
     RichTextItem body = (RichTextItem)doc.getFirstItem("Body");
     RichTextNavigator rtnav = body.createNavigator();
     if (rtnav.findFirstElement(RichTextItem.RTELEM_TYPE_SECTION)) {
       do {
         RichTextSection rtsection = (RichTextSection)rtnav.getElement();
         ColorObject color = session.createColorObject();
         color.setNotesColor(RichTextStyle.COLOR_RED);
         rtsection.setBarColor(color);
       } while (rtnav.findNextElement());
       doc.save(true, true);
     }
     else
       System.out.println("No sections in Body");

   } catch(Exception e) {
     e.printStackTrace();
   }
 }
}

See Also

setBarColor method

Glossary