java.lang.NullPointerException
   at org.netbeans.editor.Coloring.toFont(Coloring.java:820)
   at org.netbeans.editor.Coloring.fromAttributeSet(Coloring.java:783)
   at com.junichi11.netbeans.modules.color.codes.preview.ui.DrawingPanel.updateColors(DrawingPanel.java:288)
   at com.junichi11.netbeans.modules.color.codes.preview.ui.DrawingPanel.<init>(DrawingPanel.java:122)
   at com.junichi11.netbeans.modules.color.codes.preview.ui.ColorsSideBarPanel.<init>(ColorsSideBarPanel.java:58)
   at com.junichi11.netbeans.modules.color.codes.preview.ui.ColorsSideBarFactory.createSideBar(ColorsSideBarFactory.java:64)
   at org.netbeans.modules.editor.impl.CustomizableSideBar.createSideBarsMap(CustomizableSideBar.java:427)
   at org.netbeans.modules.editor.impl.CustomizableSideBar.getSideBarsInternal(CustomizableSideBar.java:204)
   at org.netbeans.modules.editor.impl.CustomizableSideBar.getSideBars(CustomizableSideBar.java:168)
   at org.netbeans.modules.editor.NbEditorUI.createExtComponent(NbEditorUI.java:287)
   at org.netbeans.editor.EditorUI.getExtComponent(EditorUI.java:954)
   at org.netbeans.modules.editor.NbEditorDocument.createEditor(NbEditorDocument.java:201)
   at org.openide.text.CloneableEditorInitializer.initCustomEditor(CloneableEditorInitializer.java:534)
   at org.openide.text.CloneableEditorInitializer.initCustomEditorAndDecorationsInEDT(CloneableEditorInitializer.java:596)
   at org.openide.text.CloneableEditorInitializer.run(CloneableEditorInitializer.java:344)
   at org.openide.text.CloneableEditorInitializer.processPendingEDTRequests(CloneableEditorInitializer.java:158)
   at org.openide.text.CloneableEditorInitializer$1.run(CloneableEditorInitializer.java:107)
   at org.netbeans.core.windows.WindowManagerImpl$Exclusive$1.run(WindowManagerImpl.java:1563)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:0)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:0)
   at java.awt.EventQueue.access$500(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:0)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:0)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:0)