If you do not specify a .MSGCOLR statement, the system uses IBM-supplied defaults. See the following description on the .MSGCOLR statement for these defaults.
If you specify a .MSGCOLR statement with no operands, the system defaults to NOCHANGE. NOCHANGE indicates that the color, highlighting, and intensity attributes are to be the same as those specified in the previously used MPFLSTxx member (or concatenation of MPFLSTxx members).