docstr: Make sure that the module's settings are consistent
  
  We need at least one image name to be filled in
docstr_tok: ["Make","sure","that","the","module","'s","settings","are","consistent","We","need","at","least","one","image","name","to","be","filled","in"]
code: def validate_module(self, pipeline):
      """Make sure that the module's settings are consistent
  
      We need at least one image name to be filled in
      """
      if self.scheme_choice not in (SCHEME_STACK, SCHEME_COMPOSITE):
          if all(
              [
                  color_scheme_setting.image_name.is_blank
                  for color_scheme_setting in self.color_scheme_settings
              ]
          ):
              raise ValidationError(
                  "At least one of the images must not be blank",
                  self.color_scheme_settings[0].image_name,
              )
  
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 7 for calling the GrayToColor obj's underlying member method code with example usage: obj.validate_module(pipeline) without return types