Haha, that would be nice! The two main themes used for macs are already included in LW (metal and aqua), but I'd likea theme based on the colors of the gnutella.com logo, where there would be more blue than grey. Lw.com has available the "ocean theme" but it is not enough blue to my tastes... Now that I think of it a grey-orange theme would be great as well. Anyway, those are ideas if you feel like doing themes
You should submit them to LW, perhaps by PMing the user sberlin (LW dev who frequently visit the board).
Ciao