title: Modify or override material-ui button css
body: <p>I have a material UI RaisedButton and I want to change the background color.</p>
  
  <p>I have this:</p>
  
  <pre><code>const style = {
   backgroundColor: 'green'
  };
  
  export default class CreateLinksave extends React.Component {
  
   &lt;RaisedButton
     label="Continue"
     style={style}/&gt;
  
  }
  </code></pre>
  
  <p>but when I refresh the page the material-ui style remains, so how can I override the style?</p>
  
  <p>A second question is, how to avoid doing inline styling? I was thinking on create a js file with constants with the styles I need for my components, import it and access to my styles that way, is that a good approach?</p>
  
  <p>I'm new to React so some help would be nice...</p>
  
  <p>Regards.</p>