React + Redux + Material UI + Styles

App.js

import React, { Component } from 'react'
import { Provider } from 'react-redux'
import AppRouter from './AppRouter'
import configureStore from '../store/configureStore'
import initialState from '../store/initialState'

import getMuiTheme from 'material-ui/styles/getMuiTheme';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';


const store = configureStore(initialState)

export default class App extends Component {
  render() {
    return (
      <Provider store={ store }>
        <MuiThemeProvider muiTheme={ getMuiTheme() }>
          <AppRouter/>
        </MuiThemeProvider>
      </Provider>
    )
  }
}

configureStore.js

import { createStore, applyMiddleware } from 'redux'
import thunkMiddleware from 'redux-thunk'
import createLogger from 'redux-logger'
import rootReducer from '../reducers'

const loggerMiddleware = createLogger({collapsed: true})

export default function configureStore(initialState) {
  return createStore(
    rootReducer,
    initialState,
    applyMiddleware(
      thunkMiddleware,
      loggerMiddleware
    )
  )
}

index.html

<link href="https://fonts.googleapis.com/icon?family=Material+Icons|Roboto:300,400,500" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/angular-material/1.0.8/angular-material.css">