On the northern fringe of Singapore, overlooking the slate gray waters of the Johore Strait, the public-housing project where Anthony Fulwood lives is so far from the city’s affluent expatriate enclaves that cabdrivers are stunned when he announces his address. ” ‘For God’s sake, why do you live there?’ they regularly ask me,” says Fulwood. ” ‘You’re white!’ ” Fulwood isn’t the only Western expatriate to take up residence in the cheaper peripheries of this Southeast Asian city.