Images depicting "Color Adjustments" in the special modes of copy mode are shown below.
Red R+
Green G+
Blue B+
Soft
Sharp
CCyan+
Y Yellow+
MMagenta+
K Black+
Intensity -
Intensity +
DarkerBrighter
For details on "Color Adjustments", see "[Color Adjustments] KEY" in "Chapter 2 - COPIER" in the Operation Guide.