Someone reviewing the last ship said my contrast was bad, the corners did not match and things needed more padding, so instead of squinting at it I went and measured all three. Every accent colour in the light theme failed WCAG AA, and the worst was the one I use for links and section headers, sitting at 1.43 to 1, which is pale blue text on pale grey. Then I counted the corner radii and found fifteen different values across 88 places, which is exactly the kind of thing you stop seeing in your own app. The padding one turned out to be a single number, the search box above the message list had zero bottom padding, and while I was looking at spacing I finally noticed the week switcher on the timetable has always been two separate boxes of different widths with mismatched corners, pretending to be one panel.