I agree with Maxor. To me, it doesn’t really matter whether Colonel’s Bequest looks outdated or not, because the graphics are really quite beautiful and they actually add something to the game’s atmosphere – it’s EASILY one of the most atmospheric games I’ve ever played.
Besides, I’m not sure whether remaking any of the classic Sierra games would improve on the originals. Take a classic movie – say, Citizen Kane. Great film, but old. Looks old. Black and white. Quite grainy in places. The sound isn’t all that clear on occasions. Yet nobody in their right mind would ever dream of suggesting that we re-film it, in colour, using digital film stock, and better sound. The same principle applies to classic games like Laura Bow, I think.