Resetting Default Color Modes; Color Modes; Default Color Modes - Ruby XL HD User Manual

Resetting Default Color Modes

If you have added or removed color modes that display on the screen, you can
always restore RUBY XL HD to its five default color modes.

Press and HOLD the green/yellow button
simultaneously for 15 seconds.

Color Modes

There are five factory default color modes and 15 additional color modes that
you can make active.

Default Color Modes

Full Color (always available, cannot be disabled)
1.
Black on White – high-contrast positive
2.
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and the blue UP arrow button