Change 'Follow Us' Text Color

Hi,

I am using this plugin and I have my webpage set to a black background. because of that, I cannot see the ‘Follow Us’ portion of the Social Plugin. How can I change the ‘Follow Us’ text color from Black to Red?

When I use the Plugin Editor and change the statement from:

$sse_buttonscode .= '<div class="simplesocialexpandable follow" style="width:70px"><a class="btnToggleplus" href="javascript:void(0)" class="slideToggle" style="color:black;text-decoration:none;font-size:10px;" >Follow Us</a>'."</div></div>\n";

To:
$sse_buttonscode .= '<div class="simplesocialexpandable follow" style="width:70px"><a class="btnToggleplus" href="javascript:void(0)" class="slideToggle" style="color:red;text-decoration:none;font-size:10px;" >Follow Us</a>'."</div></div>\n";

The plugin crashes the site and fails to load the website. I have to revert by simply changing the code from:

style="color:black;text-decoration:none;

To:
style="color:red;text-decoration:none;

Can anyone tell me how I can change the textual color of the Follow Us portion from Black text to Red or White even?

Thanks.

https://www.ads-software.com/plugins/simple-social-expandable/