Style plot background not working properly

I am using holoviews with matplotlib and plotly backends.

import holoviews as hv
import numpy as np

from functools import reduce
hv.extension('plotly', 'matplotlib')

The problem is I specify bgcolor in the options of the final overlay. The final overlay is composed of many objects

The code i use to create the plot object looks like the following:

plot_obj = reduce(lambda x, y: x * y,
            [
                group.opts(hv.opts.Path3D(color=hv.Cycle(color_swatch)),
                           hv.opts.Scatter3D(color=hv.Cycle(color_swatch), size=10, marker='cross'))
                for group in groups
            ] + 
            [
                arrow.opts(hv.opts.Path3D(color='black'))
            ] +
            [
                prism_points.opts(hv.opts.Scatter3D(color=hv.Cycle(ms_color_swatch), size=4))
            ] +
            [
                unit_vectors.opts(hv.opts.Path3D(color='black'))
            ]
      )
plot_obj.opts(width=900, height=600, aspect=aspect, bgcolor='lightgray')

The result is a plot with a white background. Something is weird. print(plot_obj) :Overlay .Conductors.P1_c1_m0_m1 :Path3D [x,y,z] .Conductors.P2_c1_m0_m1 :Path3D [x,y,z] .Conductors.P3_c1_m0_m1 :Path3D [x,y,z] .Conductors.P4_c2_m0_m1 :Path3D [x,y,z] .Conductors.P5_c2_m0_m1 :Path3D [x,y,z] .Conductors.P6_c2_m0_m1 :Path3D [x,y,z] .Span_Points.I :Scatter3D [x,y,z] .Span_Points.II :Scatter3D [x,y,z] .Span_Points.III :Scatter3D [x,y,z] .Span_Points.IV :Scatter3D [x,y,z] .Span_Points.V :Scatter3D [x,y,z] .Span_Points.VI :Scatter3D [x,y,z] .Conductors.P1_c1_m1_m2 :Path3D [x,y,z] .Conductors.P2_c1_m1_m2 :Path3D [x,y,z] .Conductors.P3_c1_m1_m2 :Path3D [x,y,z] .Conductors.P4_c2_m1_m2 :Path3D [x,y,z] .Conductors.P5_c2_m1_m2 :Path3D [x,y,z] .Conductors.P6_c2_m1_m2 :Path3D [x,y,z] .Span_Points.VII :Scatter3D [x,y,z] .Span_Points.VIII :Scatter3D [x,y,z] .Span_Points.IX :Scatter3D [x,y,z] .Span_Points.X :Scatter3D [x,y,z] .Span_Points.XI :Scatter3D [x,y,z] .Span_Points.XII :Scatter3D [x,y,z] .Conductors.P1_c1_m2_m3 :Path3D [x,y,z] .Conductors.P2_c1_m2_m3 :Path3D [x,y,z] .Conductors.P3_c1_m2_m3 :Path3D [x,y,z] .Conductors.P4_c2_m2_m3 :Path3D [x,y,z] .Conductors.P5_c2_m2_m3 :Path3D [x,y,z] .Conductors.P6_c2_m2_m3 :Path3D [x,y,z] .Span_Points.XIII :Scatter3D [x,y,z] .Span_Points.XIV :Scatter3D [x,y,z] .Span_Points.XV :Scatter3D [x,y,z] .Span_Points.XVI :Scatter3D [x,y,z] .Span_Points.XVII :Scatter3D [x,y,z] .Span_Points.XVIII :Scatter3D [x,y,z] .Total_Station.I :Path3D [x,y,z] .Device_Points.Ms1 :Scatter3D [x,y,z] .Device_Points.Ms2 :Scatter3D [x,y,z] .Unit_Vectors.I :Path3D [x,y,z] .Unit_Vectors.II :Path3D [x,y,z]

[philippjfr]

bgcolor is a plot option in holoviews, so it should be handled consistently across backends, but is probably not implemented.

[philippjfr]

I can’t reproduce any issue issue with 2D plots, the issue appears to be specific to plotly 3D plots.

@arabidopsis bgcolor controls the color of the background and the bottom layer takes precedence, if you want to color the boxes use color or fill_color.