Device Panels can be built with Lighting effects. There are two Lighting effects as explained below.
Device Panel Lighting
If the "Dawn/Dusk/Night Effect" is enabled in the Flight Sim IO Server, tablets and touch screens will eventually go dark as night falls and then become light again as dawn rises. When the tablet goes dark, only Parts of the Device Panel that are "Lit" will be visible.
If the Device Panel is configured with "Has Panel Lighting" enabled, the whole Device Panel can light up to make it visible when its gone dark.
Panel Lighting Fades (Optional)
Enabling this option will make the Panel Lighting effect darken towards the bottom of the Device Panel so it looks more realistic.
Panel Lighting Method
The Panel Lighting Method determines whether the Panel Lighting is on or off. The methods available are actually Snippets so the Simconnect Variables or X-Plane Datarefs that the Snippet monitors can be overridden for non standard aircraft.
Panel Lighting Colour
This is the colour that will be used for the Panel Lighting effect.
Part Lighting
Parts that have Foreground colours can be configured to have lighting effects. When Parts are configured in this way and they are determined to be lit, they will be visible even if the tablet has gone dark (see Device Panel Lighting above).
Part Lighting Options
Is Lit
Enabling this option on a selected Part indicates that it should be considered a Part that lights up.
Glow
Enabling this option will add a glowing effect around the Part.
Show Unlit State
Enabling this option will show the Part using the default Unlit Colour when the Part is not lit up. The default Unlit Colour can be set to the current Foreground Colour in the Colours Menu and selecting the option "Unlit Colour To Foreground Colour"
Component, Module, Device Panel Lighting Options
Lit Method
The Lit Method determines whether a Part that has been configured for lighting effects is actually lit. The methods available are actually Snippets so the Simconnect Variables or X-Plane Datarefs that the Snippet monitors can be overridden for non standard aircraft.
Lit Methods inherit, so if a Lit Method is set on a Device Panel it will be used by all the Modules in the Device Panel and all the Components in the Modules. Subsequently, if a Module has a Lit Method it overrides any Lit Method set on the Device Panel and all the Modules Components will inherit the Modules Lit Method. The same rules apply when Components have their own Lit Method. This flexibility for example, allows power indications on a Module to appear when Bus Power becomes available, but displays will only light up when Avionics Power becomes available.