Nikon NIKKOR Z 70-200mm f/2.8 VR S Lens - Manual (Page 121)

97 The i Button
D
Filter Effects
Choose from the following:
Mode Setting
Y (yellow) These options enhance contrast and can be used to tone down the brightness
of the sky in landscape photographs. Orange produces more contrast than
yellow, red more contrast than orange.
O (orange)
R (red)
G (green) Green softens skin tones and can be used for portraits.