Packages make Pulsar do amazing things.
friendly-ui
Dark blueish UI theme with soft colors for atom that's keen on the eye but stull colorful.
change-line-length
Cycle through different user-defined Preferred Line Length settings.
east-end-ui
Cafe latte UI theme that works well with notebooks in changing light situations
multi-copy-paste-clipboard
A package for the atom editor to enable a clipboard for multiple copy-paste operations. It provides a list of the last copies and you select one element from the copy-list for pasting.