Now the cat is out of the bag, and you know peeps are going to start asking... 
I actually prefer the magenta, as my wife is very "reactive" to stuff like this and the magenta works as a reminder for her (check the doors and windows before you leave the house, one or more of them is open/unlocked), while red makes her feel more like something bad happened/is about to happen. I previously was turning a light red to communicated this state and she didn't like it bering red. 
YWMV (your wife may vary ) of course.
