title: Materialize CSS Showing errors on form fields
body: <p>Is it possible to set the validation error color on form fields manually? I couldn't really figure out how it was doing the validation on <a href="http://materializecss.com/forms.html" rel="noreferrer">their site</a>. Seems like the browser is doing it automatically based on the type attribute. But what CSS would I need to attach to trigger that state? I need to do a custom validation on a text field and the one that browser does automatically is not enough.</p>