docs: def disable_multicolor(self):
          """ swap from the multicolor image to the single color image """
          # disable the multicolor image
          for color in ['red', 'green', 'blue']:
              self.multicolorscales[color].config(state=tk.DISABLED, bg='grey')
              self.multicolorframes[color].config(bg='grey')
              self.multicolorlabels[color].config(bg='grey')
              self.multicolordropdowns[color].config(bg='grey', state=tk.DISABLED)
              self.multicolorminscale[color].config(bg='grey', state=tk.DISABLED)
              self.multicolormaxscale[color].config(bg='grey', state=tk.DISABLED)
  
          # enable the single color
          self.singlecolorscale.config(state=tk.NORMAL, bg=self.single_color_theme)
          self.singlecolorframe.config(bg=self.single_color_theme)
          self.singlecolorlabel.config(bg=self.single_color_theme)
          self.singlecolordropdown.config(bg=self.single_color_theme, state=tk.NORMAL)
          self.singlecolorminscale.config(bg=self.single_color_theme, state=tk.NORMAL)
          self.singlecolormaxscale.config(bg=self.single_color_theme, state=tk.NORMAL)