Staudey Thank you for confirming issues regarding the shutdown button. It would be great to see a fix in 4.4.
I guess the Celtic Magic Button might be an easy answer but I do rather like the elegance of pushing the power button and my computer just turning off. Alternatively if the issue is restricted to Budgie then it may be a good time for me to try plasma again.
Thanks also for your suggested tweaks to get a lighter system theme, I will certainly give them a try. Hopefully with better luck that before when I ended up with black fill dialogue boxes with black writing in them, it was like something out of Hotblack Desiato's spaceship.