Introduction Dark themes recently attracted a lot of attention since enterprises such as Apple or Google deployed on most of their operating systems — iOS, macOS, Android –, an alternative to the default interface colors which were mainly light. Microsoft followed the trend and added the same option on Windows. While it is a great feature to allow people to use their computer or mobile at night without hurting their eyes, this implementation is incomplete. Indeed, to make this feature really shine, having the operating system interface dark is not enough. Developers must follow the rules too and add a dark theme to their softwares. Otherwise, it’s pointless.