This calendar can display the following types of holidays.
1. Turn on "Japanese Holiday" in "General Settings" on the settings screen
This is Japanese holiday data that we manage, and its color cannot be changed.
You can turn it off in the app's settings.
2. Turn on a subscribed holiday calendar under "Display Settings"
If you want to display holidays in a color of your choice, add a holiday calendar (for example, "US Holidays") in the built-in Calendar app, and set the color there.
Steps
1. Open the built-in "Calendar" app on your device.
2. Tap "Calendars" at the bottom of the screen.
3. Tap the info button (i) next to your holiday calendar.
4. Choose the color you like, then tap "Done" at the top right.
5. Open Simple Calendar.
Note
If the color has not changed after opening Simple Calendar, please restart your device.
3. Turn on Google Calendar holidays in "Display Settings"
If you want to change their color, change it in Google Calendar.
If you want to hide them, find the calendar in the app's "Display Settings" list and turn it off. Tap the calendar to show or hide it.