I was wonding the same thing , Wikipedia already says it usually illness awareness but specifically
Quote wikipedia
During the state of the union 2013, many attendees wore green (and silver) ribbons to remember the victims of gun violence. Green and silver are the colors of Sandy Hook elementary school.
Some fast editing over there, but probably not QC’d yet
To honor Newtown victims, apparently.
Who was the woman wearing white they showed scowling and nodding her head as if to say “Screw that” to his mention of fair pay for women?
And reading down the article on wikipedia on green ribbons, if there are any Canadians following along, it probably isn’t that.
Boehner didn’t even bother to clap when Obama mentioned tying minimum wage to the cost of living.
Military chap to other military chap " we better stand up and appluad the afganistan stuff"
He has conspicuously kept his seat during a lot of standing ovations so far.
A floppy-wristed clap while remaining seated… for wounded vets? Oh, John…
There ya go. Gun Reform. 
I’d like to know too. They (NBC) showed her at least one other time but didn’t show her name.
Hadiya Pendleton’s parents are wearing gray ribbons. 
Is it Bachman?
Winds up with an emotional one-two punch.
Sandy Hook families. Gabby Giffords. Aurora families. #TheyDeserveAVote
Might have been the first time the word “swipe” was used in a SOTUA.
Don’t see anything here that would seem to apply.
Marco Rubio uses coded words to promote tax cuts for jobs creators, I’m shocked.
Wasn’t there also supposed to be a Tea Party response to the SOTU address?
Highlight of the night: Rubio’s dry-mouthed lunge for a water bottle mid speech. Holy shit I thought he was gonna take a pie to the face!