如何在没有默认行填充颜色的情况下构建Bokeh datatable？

from bokeh.io import output_file, show
from bokeh.models import ColumnDataSource, DataTable, NumberFormatter, StringFormatter, StringEditor, IntEditor, NumberEditor, SelectEditor, StringInput, IntInput, NumberInput, SelectInput, StringTemplateFormatter, StringHTMLTemplateFormatter, HTMLTemplateFormatter, StringFormatter, DateFormatter, StringEditor, IntEditor, NumberEditor, SelectEditor, StringInput, IntInput, NumberInput, SelectInput, StringTemplateFormatter, StringHTMLTemplateFormatter, HTMLTemplateFormatter, StringFormatter, DateFormatter
from bokeh.layouts import layout
from bokeh.models.widgets import Div
from bokeh.plotting import curdoc

data = {'Column1': [value1, value2, ...],
        'Column2': [value1, value2, ...],
        ...}
source = ColumnDataSource(data)

columns = [
    TableColumn(field='Column1', title='Column 1', editor=StringEditor(), formatter=StringFormatter()),
    TableColumn(field='Column2', title='Column 2', editor=IntEditor(), formatter=NumberFormatter(format='0,0')),
    ...
]

datatable = DataTable(source=source, columns=columns, editable=True, index_position=-1, index_header='Index', index_width=50, index_width_policy='fixed', index_align='center', index_sort='ascending', sortable=True, selectable=True, fit_columns=True, width_policy='fit', height_policy='fit', index_background='white', background='white', css_classes=['my-datatable'])

layout = layout([[datatable]])
curdoc().add_root(layout)
show(layout)