dekkeng

Put the black ribbon image to your wordpress website. 
You can config the location of the black ribbon in the plugin setting.

WP Black Ribbon

Put the black ribbon image to your wordpress website.

atton16

Display mourning Black Ribbon at selected corner on every page of your website. The plugin has schedule capability in which the user can select the period of mourning.
The plugin is created to enable every website to bid farewell to His Majesty King Bhumibol Adulyadej, our beloved king.
Features:
<ul>
<li>Selectable placement of the ribbon in four corners</li>
<li>Schedule-able by start date and end date</li>
<li>Responsive</li>
</ul>
Compatibilities:
<ul>
<li>All modern browsers including mobiles</li>
</ul>
<h3>Acknowledgements</h3>
The ribbon images are provided by http://nuuneoi.com. Original images by Jatuporn Jib Piyawarinwong.

Black Ribbon by Attawit

Display mourning Black Ribbon at selected corner on every page of your website.

WP Black Ribbon vs Black Ribbon by Attawit