Multicolour signage.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/23448975@N04">Draco2008</a> from UK
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/draco2008/2617371585/">Centre for Life</a>