The original ICS standard does not provide for colours for individual calendar entries, but under Outlook the CATEGORIES attribute is used for this. Since 2016, there has been an RFC for explicitly specifying colour values, but it is unclear which calendar applications already support this and whether the library used in OpenOlat can handle it.
The project will further analyse the two options and implement one of them. The primary goal is that the colours can be changed and displayed within OpenOlat so that exam management can be managed more easily. It is secondary whether the chosen colours are also displayed on an external client, this cannot be guaranteed.