All icons, everywhere, are now grey. They didn't use to be, although I'm unsure how recent the change is. Besides looking very sad, that's bad usability: I have to check twice whether something is disabled or not, instead of it being intuitive. And when clicking on an icon, finding the right icon just takes longer: Without the colour to assist in recognising the icon almost instinctively out of the corner of my eye, it costs an extra second of staring straight at the icon panel before every click. So how do I get proper icons back?