Oce Color System 200 Operator's Manual page 48

Gradations can be set in the same way in the
Blue Background mode.
(See p. 1-40.)
Color Creation
1-36
7.
Press the OK key.
The Color Creation setting process is complete.
COLOR GRADATION is displayed.
The copier is now ready to make copies.
Setting the Gradation Pattern
The following procedure is carried out from the display in step 2.
Gradation
Blue Background