Program: 143548
Project: 143548
Buggy source:
private void applyStyleOnComponent(Component comp,Object bgColor,Object fgColor,Object compFont,Object compBorder){
  if (comp instanceof IScriptableProvider) {
    IScriptable s=((IScriptableProvider)comp).getScriptObject();
    if (s instanceof IRuntimeComponent) {
      IRuntimeComponent sbm=(IRuntimeComponent)s;
      RenderableWrapper sbmRW=null;
      if (s instanceof ISupportOnRenderCallback) {
        IScriptRenderMethods sr=((ISupportOnRenderCallback)s).getRenderable();
        if (sr instanceof RenderableWrapper)         sbmRW=(RenderableWrapper)sr;
      }
      if (bgColor != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_BGCOLOR);
        sbm.setBgcolor(bgColor.toString());
        if (sbm.isTransparent()) {
          if (comp instanceof IProviderStylePropertyChanges && ((IProviderStylePropertyChanges)comp).getStylePropertyChanges() instanceof IStylePropertyChangesRecorder) {
            ((IStylePropertyChangesRecorder)(((IProviderStylePropertyChanges)comp).getStylePropertyChanges())).setBgcolor(bgColor.toString());
          }
        }
      }
 else {
        sbm.setBgcolor(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_BGCOLOR));
        setParentBGcolor(comp,"String_Node_Str");
      }
      if (fgColor != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_FGCOLOR);
        sbm.setFgcolor(fgColor.toString());
      }
 else {
        sbm.setFgcolor(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_FGCOLOR));
      }
      if (compFont != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_FONT);
        sbm.setFont(compFont.toString());
      }
 else {
        sbm.setFont(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_FONT));
      }
      if (compBorder != null) {
        String newBorder=compBorder.toString();
        Border currentBorder=ComponentFactoryHelper.createBorder(sbm.getBorder());
        Border marginBorder=null;
        if (currentBorder instanceof EmptyBorder) {
          marginBorder=currentBorder;
        }
 else         if (currentBorder instanceof CompoundBorder && ((CompoundBorder)currentBorder).getInsideBorder() instanceof EmptyBorder) {
          marginBorder=((CompoundBorder)currentBorder).getInsideBorder();
        }
        if (marginBorder != null) {
          newBorder=ComponentFactoryHelper.createBorderString(BorderFactory.createCompoundBorder(ComponentFactoryHelper.createBorder(newBorder),marginBorder));
        }
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_BORDER);
        sbm.setBorder(newBorder);
        sbm.setSize(sbm.getWidth(),sbm.getHeight());
      }
 else {
        sbm.setBorder(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_BORDER));
      }
    }
  }
}

Fixed version (ground truth):
private void applyStyleOnComponent(Component comp,Object bgColor,Object fgColor,Object compFont,Object listItemBorder){
  if (comp instanceof IScriptableProvider) {
    IScriptable s=((IScriptableProvider)comp).getScriptObject();
    if (s instanceof IRuntimeComponent) {
      IRuntimeComponent sbm=(IRuntimeComponent)s;
      RenderableWrapper sbmRW=null;
      if (s instanceof ISupportOnRenderCallback) {
        IScriptRenderMethods sr=((ISupportOnRenderCallback)s).getRenderable();
        if (sr instanceof RenderableWrapper)         sbmRW=(RenderableWrapper)sr;
      }
      if (bgColor != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_BGCOLOR);
        sbm.setBgcolor(bgColor.toString());
        if (sbm.isTransparent()) {
          if (comp instanceof IProviderStylePropertyChanges && ((IProviderStylePropertyChanges)comp).getStylePropertyChanges() instanceof IStylePropertyChangesRecorder) {
            ((IStylePropertyChangesRecorder)(((IProviderStylePropertyChanges)comp).getStylePropertyChanges())).setBgcolor(bgColor.toString());
          }
        }
      }
 else {
        sbm.setBgcolor(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_BGCOLOR));
        setParentBGcolor(comp,"String_Node_Str");
      }
      if (fgColor != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_FGCOLOR);
        sbm.setFgcolor(fgColor.toString());
      }
 else {
        sbm.setFgcolor(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_FGCOLOR));
      }
      if (compFont != null) {
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_FONT);
        sbm.setFont(compFont.toString());
      }
 else {
        sbm.setFont(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_FONT));
      }
      if (listItemBorder != null) {
        String newBorder=listItemBorder.toString();
        Border currentBorder=ComponentFactoryHelper.createBorder(sbm.getBorder());
        Border marginBorder=null;
        if (currentBorder instanceof EmptyBorder) {
          marginBorder=currentBorder;
        }
 else         if (currentBorder instanceof CompoundBorder && ((CompoundBorder)currentBorder).getInsideBorder() instanceof EmptyBorder) {
          marginBorder=((CompoundBorder)currentBorder).getInsideBorder();
        }
        if (marginBorder != null) {
          newBorder=ComponentFactoryHelper.createBorderString(BorderFactory.createCompoundBorder(ComponentFactoryHelper.createBorder(newBorder),marginBorder));
        }
        if (sbmRW != null)         sbmRW.clearProperty(RenderableWrapper.PROPERTY_BORDER);
        sbm.setBorder(newBorder);
        sbm.setSize(sbm.getWidth(),sbm.getHeight());
      }
 else {
        sbm.setBorder(runtimeComponentStyleAttributes.get(sbm).get(RenderableWrapper.PROPERTY_BORDER));
      }
    }
  }
}