Problem with the color_list functionality of dash.clustergram

[Coding-with-Adam]

Bug reported on community Forum in this post:

It appears that the color_list functionality of dash.clustergram is not working. The color dictionary is supposed to update the cluster trace colors, however, while the color_list dictionary can be defined, it is not used and only default colors are displayed.

This is also the case for the plotly gallery example (Clustergram | Dash for Python Documentation | Plotly 1) as minimal example:

import pandas as pd
from dash import dcc
import dash_bio as dashbio

df = pd.read_csv('https://git.io/clustergram_brain_cancer.csv').set_index('ID_REF')

columns = list(df.columns.values)
rows = list(df.index)

clustergram = dashbio.Clustergram(
    data=df.loc[rows].values,
    row_labels=rows,
    column_labels=columns,
    color_threshold={
        'row': 250,
        'col': 700
    },
    height=800,
    width=700,
    color_list={
        'row': ['#636EFA', '#00CC96', '#19D3F3'],
        'col': ['#AB63FA', '#EF553B'],
        'bg': '#506784'
    },
    line_width=2
)

dcc.Graph(figure=clustergram)
clustergram

Plotly staff member, Emilie Burton, looked into it and confirmed this is a bug as well.