Irregular lesson aren't colored correctly #489
Description
Steps to Reproduce
Set your own colors
Expected Result
Irregular lesson are colored with the "Irregul lessons" color
Actual Result
They are shown with the "Regular lessons" color
Android Version
Android 16
BetterUntis Version
5.0.0-beta04
Installation Source
F-Droid
Additional information
This issue doesn't persist for cancelled lessons or lessons with tests