Has this been done or can be it even be done??
 

I been digging with no luck across the internet looking for a way to change a forum's skin from day time to night time by looking at the local members computer time.
Place in the admin panel to where you could turn it off or on & then pick your default day skin & night skin, after that the admin can then set the times it would change from day to night & back.

Has this been done or can be it even be done??

Thanks for the comments

This can be done I know for vB3 and vB4, possibly vB5 as well however it would require custom development (and possibly use of timezone setting as of course there is no sensor attached to the forum like on some cars for headlight functions etc it would be on expected night-time based on DST and timezone more than likely).