Looking for documentation on gluestack-ui with NativeWind (alpha) version? Refer to this link.

Color Mode

We can apply different styles based on different color mode by defining _dark and _light property in sx prop.
In the below example we are defining styles to be applied in dark mode in _dark object and for light mode in _light object.
<Button $dark-bg="$blue600" $light-bg="$red600">
<ButtonText>Hello world</ButtonText>
Expo snack link for managing color mode.