Custom CSS

I’m trying to change the text color of this span area “## people like this”. Currently it is using this code:

body {
color: #141823;
}

from this file: https://www.facebook.com/plugins/like.php?

I tried adding:

body {
color: #ffffff !important;
}

to the Custom CSS section in admin, and an ik_facebook_custom_style.css file in my theme. While these styles are coming up in Firebug, they are getting overwritten by the above style. Any ideas? Thanks!

https://wordpress.org/plugins/ik-facebook/