Tom,
Fantastic question. I’m guessing that you’re referring to the Jetpack plugin’s subscription links that can be shown below the comment area. If that’s the case, they are actually loaded via what’s called an iFrame. It’s similar to embedding a YouTube video or a Facebook like box.
The bad part about that is the site where it’s embedded can’t change the styling of anything inside the iFrame.
I believe that the plugin does add in a few color options that you can choose from. If you’ll go to the Sections section in your WordPress control panel and select Discussion, there are a couple of color options there you can try.
If the comment area is set to transparent you can set a background color though. Here’s how you can do that:
- Go to the Theme Options page and select the Styling tab.
- Scroll down to the Custom CSS box and paste this:
iframe#jetpack_remote_comment {
background-color: #cccccc;
}
- Update your settings.
That would make the background color gray. You can change the #cccccc to the hex color of your choice if you'd like something different there.
If I can help, just let me know,
Bill