Norton Icon now grey after restart update

I just got the restart required message and rebooted my computer. Everything loaded-up like normal, but Norton's icon is grey. Everything shows-up inside though, and it says "secure" in green when I open it up. It seems to be okay, but is it really working? There have been no virus attacks or anything of the sort recently, and scanning still works. (Cookies are detected like usual.)

 

Is it okay, or am I freaking-out over nothing?