Best way to show an "unactivated" part of an app?

I've got a dashboard that shows both active and unactivated parts of an app (users opt in to a service). Is there any standard for the best way to show an element/section is unactivated? Any way to encourage activation?

I'm sure there are numerous examples out there of apps that have "can't use this till you pay" section, but I can't seem to find anything that would illuminate a standard practice here.

Thanks!

edit: I'm picking this up from someone else's design. Here's my starting point: http://imgur.com/a/vtjfN