Dell 3115 Color Laser User Manual page 547

Off
tion is available only for color printing.
-Ct
Specifies color transformation.
s option is available only for color printing.
-Br=mode
Specifies brightness adjustment.
Available brightness adjustment lue are as follows:
+5
Bright 5
+4
Bright 4
+3
Bright 3
+2
Bright 2
+1
Bright 1
+0
Normal
-1
1
-2
Dark 2
-
Dark 3
-4
Dark 4
-5