code: def test_specified_props_kwd(self, props, expected):
      # GH 30346
      df = DataFrame(
          {k: np.random.default_rng(2).random(10) for k in "ABC"}
      )
      kwd = {props: {"color": "C1"}}
      result = df.boxplot(return_type="dict", **kwd)
  
      assert result[expected][0].get_color() == "C1"
  
imports: import itertools
  import string
  import numpy
  import pytest
  from pandas import DataFrame, MultiIndex, Series, date_range, plotting, timedelta_range
  import pandas._testing
  from pandas.tests.plotting.common import _check_axes_shape, _check_box_return_type, _check_plot_works, _check_ticks_props, _check_visible
  from pandas.io.formats.printing import pprint_thing
label_desc: Use image node_id 21 for calling the TestDataFramePlots obj's underlying member method code with example usage: obj.test_specified_props_kwd(props, expected) without return types