I'm constantly hitting the wrong button because some animation shifted it, some dialog popped over shit, or some notification decided now was a good time to cover the thing I was trying to do. The animations make things feel sluggish. And they don't even look good.
The only advice that doesn't improve all UIs is the bit about filling in with white and adding black after.
The only advice that doesn't improve all UIs is the bit about filling in with white and adding black after.