Slim display manager is a great peace of software. Below, is a tutorial how to apply themes to it. Proceed with caution. If you do not know what you are doing look help before continuing. Otherwise you might break something you do not want to.
Note. Users of PostX Gnu/Linux will only need to take steps 6 and 7 if they want to change to another slim-ntheme (slim nthemes are already installed) which should take about 3 minutes. Also, in PostX it is good enough if you just exit the desktop to apply changes. Continue reading