It is menu to set the Basic/Alarm colors.
If you select 'Config | Colors', submenu is shown such as <Figure 1>.
<Figure 1> Submenu of Colors menu
Colors menu has submenu as follows.
Basic Colors : Set the text/background colors of default screen.
Alarm Colors : Set the colors for alarm such as HiHi, High, Low, LoLo, ON, OFF etc.
Relate items)