Lasco Enterprises LLC currently is undertaking an enormous challenge: transforming a former Italian restaurant to a new fine-dining Tex-Mex concept in just three weeks. Añejo's opening day is March 24. "It's all cosmetic. It's just a lot of lipstick," Jonathan Horowitz, chief brand officer and partner at the Houston-based company, said of the renovation. The team is able to transform the space in such a short time because the restaurant didn't require any structural changes. The bulk of the work…