How to change colors also warning

[Arif-un]

How to change the default color
and a warning showing on start bash theme command not found

[PeterShaws]

The color palette is at the top of the script. Note the variables ending in _COLOR: they specify background and foreground colors for each segment, in the form of a list of two or three codes. The color codes are Black, Red, Green, Yellow, Blue, Magenta, Cyan, and White. The third code is for an optional Bold modifier.