How to use the gooey.gui.styling function in Gooey

def CreateHelpMsgWidget(self, parent, action):
    base_text = wx.StaticText(parent, label=action.help)
    if self.HasNargs(action):
      base_text.SetLabelText(base_text.GetLabelText() + self.CreateNargsMsg(action))
    styling.MakeDarkGrey(base_text)
    return base_text

def CreateNameLabelWidget(self, parent, action):
    label = str(action.dest).title()
    if len(action.option_strings) > 1:
      label += ' (%s)' % action.option_strings[0]
    text = wx.StaticText(parent, label=label)
    styling.MakeBold(text)
    return text

def createTitle(self, parent):
    text = wx.StaticText(parent, label=self.data['display_name'].title())
    styling.MakeBold(text)
    return text

def CreateNameLabelWidget(self, parent, action):
    label = str(action.dest).title()
    if len(action.option_strings) > 1:
      label += ' (%s)' % action.option_strings[0]
    text = wx.StaticText(parent, label=label)
    styling.MakeBold(text)
    return text

def CreateHelpMsgWidget(self, parent, action):
    base_text = wx.StaticText(parent, label=action.help)
    if self.HasNargs(action):
      base_text.SetLabelText(base_text.GetLabelText() + self.CreateNargsMsg(action))
    styling.MakeDarkGrey(base_text)
    return base_text

def CreateNameLabelWidget(self, parent, action):
    label = str(action.dest).title()
    if len(action.option_strings) > 1:
      label += ' (%s)' % action.option_strings[0]
    text = wx.StaticText(parent, label=label)
    styling.MakeBold(text)
    return text

def createHelpMsgWidget(self, parent):
    label_text = (self.formatExtendedHelpMsg(self.data)
                  if self.data['nargs']
                  else self.data['help'])
    base_text = wx.StaticText(parent, label=label_text or '')
    styling.MakeDarkGrey(base_text)
    return base_text