Toyota Lexusc Owner's Handbook Manual page 428

Screen adjustment
You can adjust the color, contrast, tone and brightness of
the screen.
Push the "DISPLAY" button on the controller
the "Display" screen 2 will appear.
The screen may turn purple to deflect the sunlight. This is not
a malfunction.
"+" or "RED"
Strengthens the
COLOR
red color
Strengthens the
CONTRAST
contrast
Strengthens the
TONE
tone
BRIGHTNESS Brightens
Each time you push the "+" or "-" switch, you can adjust the
color, contrast, tone and brightness of the screen.
1 and then
"- " or "GREEN"
Strengthens the
green color
Weakens the
contrast
Weakens the tone
Darkens
AUDIO
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