Change Post Reminders Icon To Indicate A Reminder Has Been Set

On a Post or Post comment, if you click "Remind me about this Post" it prompts for the reminder duration. Once chosen, there's no further indication that a Reminder has been set. A user just set herself 9 reminders for the same Post.

Please change Reminders to work like the other Post buttons - turn the icon blue to indicate a reminder has been set. Once it's blue, clicking the icon again should show the previous setting - to remind in X time, but also give the option to change the timeframe or remove the reminder. Upon removing a reminder, the icon should change back to white.