Back in november, the default “theme” of the top command in Arch Linux was changed. Using red color and displaying processed as a tree rather than sorted by CPU usage, it made the command pretty useless and eye-hurting.

No idea why this change was performed, but I found how to revert in the thread on the Arch Linux Forums

Here’s the howto : remove your ~/.toprc (if any) start “top” press z press V press 1 press y press m m press t t t press W this will write a ~/.toprc fairly similar to what you are used to.