code: def element_color(self, element, color_prop=None):
      if isinstance(element, Table):
          color = element.opts.get("style").kwargs["fill"]
      elif isinstance(element, (Rectangles, VSpan)):
          color = element.opts.get("style").kwargs["line_color"]
      else:
          color = element.opts.get("style").kwargs["color"]
  
      if isinstance(color, (Cycle, str)):
          return color
      else:
          return list(color)
  
imports: from unittest import skip, skipIf
  import pandas
  import holoviews
  from holoviews.core.options import Cycle, Store
  from holoviews.element import ErrorBars, Points, Rectangles, Table, VSpan
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.plotting.util import linear_gradient
  from holoviews.selection import link_selections
  from holoviews.streams import SelectionXY
label_desc: Use image node_id 3 for calling the TestLinkSelectionsPlotly obj's underlying member method code with example usage: obj.element_color(element, color_prop) and returns: color, list