Known from different websites and apps, we should be able to switch the interface to dark mode. This increases user comfort as it reduces eye strain and glare, especially in low-light or nighttime conditions. It also can make text and content more legible for some users, particularly those with certain visual impairments or sensitivities to bright light. Dark mode also can help reduce the amount of blue light emitted by screens, which may improve sleep patterns and reduce digital eye strain.
I have had the same request from a visually impaired user in my company who is involved in Process Design and Approval. This request is targeting ARIS Process Mining but I think it should be directed to all the ARIS Portals and clients.