Here's a screenshot of Apple's (just-out-of-Beta) Find My iPhone on iCloud.com showing exactly the same scenario but designed properly: https://dl.dropboxusercontent.com/u/709013/Screenshots/fmi-i...
It's much clearer, and in my opinion looks much better than the original toggle shown in the "before" screenshot there.
Here's a screenshot of Apple's (just-out-of-Beta) Find My iPhone on iCloud.com showing exactly the same scenario but designed properly: https://dl.dropboxusercontent.com/u/709013/Screenshots/fmi-i...
It's much clearer, and in my opinion looks much better than the original toggle shown in the "before" screenshot there.