Yes, the yellow for the birthday calendar is the single pixel stripe beneath the green background cake to which I am totally ADHD-blind. I’m looking for colours not for cakes.

Google Calendar events on Android are spontaneously decorated with themed cartoons based on the event text and you can’t switch it off. I miss so many dinners and birthdays because the cartoon colour is not the colour I am expecting from the web experience. I have to use event descriptions like PRIYA_DINNER to prevent the auto illustrations.

It’s a massive usability pain.

It’s a complete pain. Here is the blue family calendar in which I have a weekly reminder to maybe book a nice lunch for us:

Workaround

The full page Android calendar widget does not attempt to prettify the events and does not suffer this problem. However, it is a lot less flexible than the actual app.