I am not a fan over super flatness and hence I appreciate a fake-3D button. But in the same way that many great computer games ALSO don't try for ultra-realism

I am not a fan over super flatness and hence I appreciate a fake-3D button. But in the same way that many great computer games ALSO don't try for ultra-realism, I don't think it needs to model the real world as much as it does. Things I'd do without: - rising on hover. Colour change is enough acknowledgement. - shadow. Having the two coloured layers is enough. - spring-like overshoot behaviour. Simple down+up is fine. But it is always cool to see a nicely written "I want to achieve this; this is how" article. +1 to author.