Yes, my friend shot it - in fact he shoots lots of magpies, and he'd likely argue "why spare this one, because it's a different colour?" He calls it 'Pest control'.
A lot of my friends shoot magpies and are involved in conservation in other ways too.
I've other friends who don't shoot or hunt - but otherwise they're quite normal folk, and sometimes have been known to contribute to conservation too!
o
Keith.