By Denny Dyroff, Entertainment Editor, The Times Grayscale Grayscale is celebrating the release of its sophomore album, “Nella Vita,” with a show on October 5 at the Theatre of the Living Arts (334 South Street, Philadelphia, 215-222-1011, http://www.lnphilly.com). It will be a homecoming for the Philadelphia-based band after a brief stateside tour and the lone area gig prior to an ambitious European...