Mark David A bold and boxy contemporary home in the fashionable, hipster-favored Silver Lake area of Los Angeles, owned by showbiz polymath Mark Duplass and actor Katie Aselton, has hit the market with an asking price of $6.75 million.Designed by eminently respected L.A.-based architect Barbara Bestor, and completed in 2006, the redwood, stucco and glass architectural presides over a generous, one-third-acre parcel just above the reservoir for which the artsy neighborhood takes it name.