Just something that crossed my mind. And that might make some mod'ers happy. (or not, ... more work.)
Normal HnH game view (default client) has a light day and dark night. (and as there might be some graphics dynamic recoloring in the future of HnH.)*
Mable it would also be nice to have some way to also allow GUI elements to change there appearance (color, lightnes, etc) in relation to the HnH day/night time.
(obviously optional, as there is no point of doing this when playing in artificial 24h day mode. ... Which also make this somewhat of a trivial(usefulness) feature.)
Anyway ... just a raw idea. (in case its really easy to link it up with some future HnH client/graphics feature.)
*) ref: Dyes and Paints