Try changing the CPU colours from right to left in one go where most of them are custom colours.
** Attachment added: "Screenshot from 2018-11-07 11-40-59.png" https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1791936/+attachment/5210063/+files/Screenshot%20from%202018-11-07%2011-40-59.png -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/1791936 Title: GNOME system-monitor cpu graph color does not update or persist To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1791936/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs