code: def color_picker():
      def color_slider(title, color):
          return Slider(
              title=title,
              show_value=False,
              value=127,
              start=0,
              end=255,
              step=1,
              orientation="vertical",
              bar_color=color,
          )
  
      red = color_slider("R", "red")
      green = color_slider("G", "green")
      blue = color_slider("B", "blue")
  
      div = Div(width=100, height=100, background="rgb(127, 127, 127)")
  
      cb = CustomJS(
          args=dict(red=red, green=green, blue=blue, div=div),
          code="""
          const r = red.value
          const g = green.value
          const b = blue.value
          div.background = `rgb(${r}, ${g}, ${b})`
      """,
      )
  
      red.js_on_change("value", cb)
      green.js_on_change("value", cb)
      blue.js_on_change("value", cb)
  
      return Row(children=[red, green, blue, div])
  
imports: from datetime import date
  from bokeh.document import Document
  from bokeh.embed import file_html
  from bokeh.models import Column, CustomJS, DateRangeSlider, DateSlider, Div, RangeSlider, Row, Slider
  from bokeh.util.browser import view
label_desc: Use image node_id 1 for calling a global function with example usage: color_picker() and returns: Row, Slider