title: How to apply theme or customize Nebular icons?
body: <p>I working on the Nebular theme. I have to customize the icons like icon-font-size. I found the documentation <a href="https://akveo.github.io/nebular/docs/components/icon/theme#nbiconcomponent" rel="nofollow noreferrer">here</a>.</p>
  <pre><code>&lt;nb-icon icon=&quot;file-text-outline&quot;&gt;&lt;/nb-icon&gt;
  </code></pre>
  <p>My question is, How to change default values that are available <a href="https://akveo.github.io/nebular/docs/components/icon/theme#nbiconcomponent" rel="nofollow noreferrer">here</a>.</p>
  <p>I have tried</p>
  <pre><code>&lt;nb-icon [options]={icon-font-size:'1.5rem'} icon=&quot;file-text-outline&quot;&gt;&lt;/nb-icon&gt;
  </code></pre>
  <p>But it is not working.</p>