After three years as a creative director at Crispin Porter + Bogusky, Geordie Stephens has departed the agency to direct for Santa Monica's Tool. ... Paris' 75 Productions signed director Matthieu Mantovani, founding member of ZOO and recipient of the 2004 Best Clip award from Le Club des Directeurs Artistiques for his music video for Sebastien Tellier's "Broadway." ... Music production executive Jeff Rosner and engineers Josh Abbey and Kevin Halpin launched Color, an audio postproduction company based in New York. ... Seattle's Sedgwick Rd. added creative marketers Tom Sobotta and Melissa Nelson to its brand development force. ... Charlotte, N.C.'s BooneOakley added Eric Roch von Rochsburg, formerly senior art director at Sterrett, Dymund, Charlotte, to the studio manager post.