i really like those
in LOTR they always tried to push the colour a little unnaturally in order to give an 'otherworld' king of feeling. i think that the over green/dusky colours of endor could do exactly that. i always associate ROTJ with summertime, this has definitely added to that!
any chance you could have a crack at a 'creepy' endor colour set? something like tia dalma's shack in POTC2 i mentioned earlier that if the ewoks were given a weird cannibal image that it could give them a believable sinister edge.