Program: 67598
Project: 67598
Buggy source:
private void applyStyles(Chart model,StyledComponent type,EObject component,IStyleProcessor externalProcessor){
  if (component instanceof Block) {
    if (component.eContainer() instanceof Chart) {
      IStyle style=getMingledStyle(model,type,externalProcessor);
      ColorDefinition newBackcolor=style.getBackgroundColor();
      Image newBackimage=style.getBackgroundImage();
      Fill background=((Block)component).getBackground();
      if (background == null) {
        if (newBackcolor != null) {
          ((Block)component).setBackground(newBackcolor);
        }
 else {
          if (implicitProcessor.isHighContrast()) {
            ((Block)component).setBackground(goFactory.BLACK());
          }
 else {
            ((Block)component).setBackground(goFactory.WHITE());
          }
        }
        if (newBackimage != null) {
          ((Block)component).setBackground(newBackimage);
        }
      }
      Insets ins=((Block)component).getInsets();
      Insets padding=style.getPadding();
      if (padding != null) {
        if (ins == null) {
          ins=goFactory.createInsets(0,0,0,0);
          ((Block)component).setInsets(ins);
          ins.setTop(padding.getTop());
          ins.setLeft(padding.getLeft());
          ins.setBottom(padding.getBottom());
          ins.setRight(padding.getRight());
        }
      }
    }
  }
 else   if (component instanceof Text) {
    IStyle style=getMingledStyle(model,type,externalProcessor);
    Text text=(Text)component;
    if (text.getFont() == null) {
      text.setFont(style.getFont());
    }
 else {
      FontDefinition newFont=style.getFont();
      FontDefinition font=text.getFont();
      ChartUtil.mergeFont(font,newFont);
    }
    if (text.getColor() == null) {
      text.setColor(style.getColor());
    }
  }
 else   if (component instanceof LineAttributes) {
    if (component.eContainer() instanceof Axis || component.eContainer() instanceof Series) {
      LineAttributes lia=(LineAttributes)component;
      if (lia.getColor() == null) {
        IStyle style=getMingledStyle(model,type,externalProcessor);
        lia.setColor(style.getColor());
      }
    }
  }
 else   if (component instanceof Axis) {
    Axis axis=(Axis)component;
    if (axis.getFormatSpecifier() == null) {
      IStyle style=getMingledStyle(model,type,externalProcessor);
switch (axis.getType()) {
case DATE_TIME_LITERAL:
        axis.setFormatSpecifier(style.getDateTimeFormat());
      break;
case LINEAR_LITERAL:
case LOGARITHMIC_LITERAL:
    axis.setFormatSpecifier(style.getNumberFormat());
  break;
case TEXT_LITERAL:
axis.setFormatSpecifier(style.getStringFormat());
break;
}
}
}
}

Fixed version (ground truth):
private void applyStyles(Chart model,StyledComponent type,EObject component,IStyleProcessor externalProcessor){
  if (component instanceof Block) {
    if (component.eContainer() instanceof Chart) {
      IStyle style=getMingledStyle(model,type,externalProcessor);
      ColorDefinition newBackcolor=style.getBackgroundColor();
      Image newBackimage=style.getBackgroundImage();
      Fill background=((Block)component).getBackground();
      if (background == null) {
        if (newBackcolor != null) {
          ((Block)component).setBackground(newBackcolor);
        }
 else {
          if (implicitProcessor.getDefaultBackgroundColor() != null) {
            ((Block)component).setBackground(implicitProcessor.getDefaultBackgroundColor());
          }
 else {
            ((Block)component).setBackground(goFactory.WHITE());
          }
        }
        if (newBackimage != null) {
          ((Block)component).setBackground(newBackimage);
        }
      }
      Insets ins=((Block)component).getInsets();
      Insets padding=style.getPadding();
      if (padding != null) {
        if (ins == null) {
          ins=goFactory.createInsets(0,0,0,0);
          ((Block)component).setInsets(ins);
          ins.setTop(padding.getTop());
          ins.setLeft(padding.getLeft());
          ins.setBottom(padding.getBottom());
          ins.setRight(padding.getRight());
        }
      }
    }
  }
 else   if (component instanceof Text) {
    IStyle style=getMingledStyle(model,type,externalProcessor);
    Text text=(Text)component;
    if (text.getFont() == null) {
      text.setFont(style.getFont());
    }
 else {
      FontDefinition newFont=style.getFont();
      FontDefinition font=text.getFont();
      ChartUtil.mergeFont(font,newFont);
    }
    if (text.getColor() == null) {
      text.setColor(style.getColor());
    }
  }
 else   if (component instanceof LineAttributes) {
    if (component.eContainer() instanceof Axis || component.eContainer() instanceof Series) {
      LineAttributes lia=(LineAttributes)component;
      if (lia.getColor() == null) {
        IStyle style=getMingledStyle(model,type,externalProcessor);
        lia.setColor(style.getColor());
      }
    }
  }
 else   if (component instanceof Axis) {
    Axis axis=(Axis)component;
    if (axis.getFormatSpecifier() == null) {
      IStyle style=getMingledStyle(model,type,externalProcessor);
switch (axis.getType()) {
case DATE_TIME_LITERAL:
        axis.setFormatSpecifier(style.getDateTimeFormat());
      break;
case LINEAR_LITERAL:
case LOGARITHMIC_LITERAL:
    axis.setFormatSpecifier(style.getNumberFormat());
  break;
case TEXT_LITERAL:
axis.setFormatSpecifier(style.getStringFormat());
break;
}
}
}
}