Why was NO-SD the only "pink" game this weekend?

Profootballtalk had a post a few days ago commenting on this and suggesting that going forward each team will pick one home game during October that they and their opponent will showcase the pink. I much prefer that to the whole month, but wouldn't mind one bit if it went away entirely as it looks positively awful. I didn't mind it so much when it was only one game, but I didn't like it at all when they switched for the whole month. October sometimes has five weekends, so those years they've made teams wear pink for 5/16 games, practically a third of the season.