Control the theme of DAQ components

Primary color has to be changed directly with setattr, secondary color, detail color, and dark and be set with theme

import dash
import dash_daq as daq
import dash_html_components as html

external_stylesheets = ['https://codepen.io/anon/pen/mardKv.css']

app = dash.Dash(__name__, external_stylesheets=external_stylesheets)

theme =  {
    'dark': True,
    'detail': '#007439',
    'primary': '#00EA64',
    'secondary': '#6E6E6E',
}

rootLayout = html.Div([
    daq.Gauge(
        min=0,
        max=10,
        value=6,
        color=theme['primary'],
        id='darktheme-daq-gauge',
        className='dark-theme-control'
    ), html.Br(),
])


app.layout = html.Div(id='dark-theme-container', children=[
    html.Div(
        id='theme-colors',
        children=[
            daq.ColorPicker(
                id='primary-color',
                label='Primary color',
                value=dict(hex='#00EA64')
            ),
            daq.ColorPicker(
                id='detail-color',
                label='Detail color',
                value=dict(hex='#007439')
            )
        ]
    ),
    html.Div(id='dark-theme-components', children=[
        daq.DarkThemeProvider(theme=theme, children=rootLayout)
    ], style={'border': 'solid 1px #A2B1C6', 'border-radius': '5px', 'padding': '50px', 'margin-top': '20px'})
], style={'padding': '50px'})


@app.callback(
    dash.dependencies.Output('dark-theme-components', 'children'),
     [dash.dependencies.Input('primary-color', 'value'),
     dash.dependencies.Input('detail-color', 'value')]
)
def edit_theme(p, d):

    if p is not None:
        theme.update(
            primary=p['hex']
        )
        for child in getattr(rootLayout, 'children'):
            if hasattr(child, 'color'):
                setattr(child, 'color', p['hex'])

    if d is not None:
        theme.update(
            detail=d['hex']
        )
    return daq.DarkThemeProvider(theme=theme, children=rootLayout)

if __name__ == '__main__':
    app.run_server(debug=True)