Specifies the blue component of an entry in the color table. You cannot change a static color with this method. Before changing the color, you must make the color dynamic using the SET-DYNAMIC( ) method. For an example, see
r-colhan.p in the COLOR-TABLE system handle entry.
An integer expression that specifies the blue RGB component of an entry in the color table. The value must be in the range 0 to 255.