app.py

# -*- coding: utf-8 -*-
import dash
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash()

colors = {
	'backgroud': '#111111',
	'text': '#7FDBFF'
}

app.layout = html.Div(style={'backgroundColor': colors['background']}, children=[
    html.H1(
    	children='Hello Dash',
    	style={
    		'textAlign': 'center',
    		'color': colors['text']
    	}
    ),

    html.Div(children='Dash: A web application framework for Python.', style={
    	'textAlign': 'center', 
    	'color': colors['text']
    }),

    dcc.Graph(
        id='example-graph-2',
        figure={
            'data': [
                {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
                {'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
            ],
            'layout': {
                'plot_bgcolor': colors['background'],
                'paper_bgcolor': colors['background'],
                'font': {
                	'color': colors['text']
                }
            }
        }
    )
])

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