code: def add_stack_channel_cb(self, can_remove=True):
      group = SettingsGroup()
      default_color = DEFAULT_COLORS[
          len(self.stack_channels) % len(DEFAULT_COLORS)
      ]
      group.append(
          "image_name",
          ImageSubscriber(
              "Image name",
              "None",
              doc="""\
  *(Used only if "%(SCHEME_STACK)s" or "%(SCHEME_COMPOSITE)s" is chosen)*
  
  Select the input image to add to the stacked image.
  """
              % globals(),
          ),
      )
      group.append(
          "color",
          Color(
              "Color",
              default_color,
              doc="""\
  *(Used only if "%(SCHEME_COMPOSITE)s" is chosen)*
  
  The color to be assigned to the above image.
  """
              % globals(),
          ),
      )
      group.append(
          "weight",
          Float(
              "Weight",
              1.0,
              minval=0.5 / 255,
              doc="""\
  *(Used only if "%(SCHEME_COMPOSITE)s" is chosen)*
  
  The weighting of the above image relative to the others. The image’s
  pixel values are multiplied by this weight before assigning the color.
  """
              % globals(),
          ),
      )
  
      if can_remove:
          group.append(
              "remover",
              RemoveSettingButton(
                  "", "Remove this image", self.stack_channels, group
              ),
          )
      self.stack_channels.append(group)
  
imports: import numpy
  from cellprofiler_core.image import Image
  from cellprofiler_core.module import Module
  from cellprofiler_core.setting import Color, Binary
  from cellprofiler_core.setting import HiddenCount
  from cellprofiler_core.setting import SettingsGroup
  from cellprofiler_core.setting import ValidationError
  from cellprofiler_core.setting.choice import Choice
  from cellprofiler_core.setting.do_something import DoSomething, RemoveSettingButton
  from cellprofiler_core.setting.subscriber import ImageSubscriber
  from cellprofiler_core.setting.text import ImageName, Float
label_desc: Use image node_id 2 for calling the GrayToColor obj's underlying member method code with example usage: obj.add_stack_channel_cb(can_remove) without return types