I am the parent and I just configured our router to block the internet for me at all the blue times.
Most of the white (unblocked) time during the week days coincides with my day job, which is unavoidable (paid) screen-stare time, since I earn a living as a computer programmer.
Life is too short to spend >50% of my waking hours staring at a screen. I am excited to spend more time with my kids, my wife, outside, in nature, reading books, etc.
Oleander Donovan's IT blog 
Definitely brought a smile to my face Oliver.
I love this. As a fellow programmer, I find that too much of my time is spent strapped to a desk. That doesn’t seem to be the ideal life.