In this installment of ’10 Questions for . . .’ by ConsumerReport.org , Senior Editor Daniel DiClerico speaks with Libby Langdon, a New York City-based interior designer who appears on HGTV’s Small Space, Big Style; her new book, Small Space Solutions, is due out in March 2009. Here, Langdon reveals her favorite paint colors, shares several space-expanding tricks, and talks about the latest in light bulbs.