title: Change Material design theme for Angular 2
body: <p>I am trying to use <a href="https://github.com/angular/material2" rel="noreferrer">Angular Material 2</a> with my Angular 2 application.</p>
  
  <p>I did not found how to change material theme globally (<code>primaryColor</code>, etc).
  I know that Angular Material 2 is still in alpha, but is there currently a way to do that? </p>