You can print the color sample to view the configured values for specifying the pen colors on the RPGL Menu, and the results of the adjustments you have made to the colors.
Press the [User Tools/Counter] key.
Press [Printer Features].
Press the [Test Print] tab, and then press [Colour Sample].
Press [Exit] twice.
Paper is fed from the currently selected paper input location.
For details about how to specify a pen color using the color sample, see Printing in Pen Colors Specified on Control Panel.