I know it is a feature request which has been stated already. But I want to underline that a dark mode for GX touch would really help in the following two situations an I hope Victron will develop it:
1. minimizing light emissions (important for example in a vehicle or in a sleeping environment)
2. preserving night vision (I use it on a sailboat and looking on the GX touch during navigation kills your night vision for a couple of minutes - therefore, all boat instruments have night modes which are predominantly black/red).
An automatic day/night mode switching, depending on the ambient light conditions, would of course be the non-plus-ultra solution. Thank you, Victron, for all the good things you do.