Mojave Dark Mode includes a new full Dark Mode. If this modes is to black for you, there is a possibility to reverse to the macOS High Sierra dark mode. The following procedure disables the full Mojave dark mode and only enables a dark menubar and dock just like macOS High Sierra.
Nothing is more annoying that Photos will opens automatically when you connect an iPhone, iPad or other devices to your Mac. Use the following command in Terminal to change this and prevent Photos from opening automatically.