Duplicate detection on b&w screen

[ajdubovoy]

Hi team, I really am so impressed by jidoujisho. Thanks for your hard work here!

I'm using mine on a Boox Palma and WOW it's such a great tool on eink. I can even use it easily from the system reading app via the share extension.

I've noticed a little quirk, however, that I thought I would report. When using it on a grayscale display (no color), it's really hard to tell whether a duplicate card has been detected. Usually I can't see the shade difference at all. In Ankidroid itself, the difference is quite easy to see, since the contrast difference between a white input and a red-highlighted one is huge. In jidoujisho, the contrast difference is minimal to nonexistent. I'd imagine this is generally an issue when using the app with grayscale monitors, but it also may affect users with color blindness or similar vision impairments.

An easily solution would be to add a border or some other non-color based cue (even a tooltip or icon) to indicate duplicate detection.

Thanks so much!