Ah, many thanks for picking up on mis-styling of Check. I had been thinking for some time I should look into why it was so muddy, but hadn't got around to it. That looks much nicer. And I think floating the Stop button to the right looks great too. The red is a trifle fiercer than I had in mind but certainly gets across the message that this is not a button to be trifled with!
Proposed new feature: "Stop and read feedback" button
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