When a home building company sees a sudden spike in the number of competitive shoppers wandering around their new model markets, it's a sure sign that a new design has taken hold. In Texas, which is a housing market arena unto itself these days, just such a design "tipping point" has occurred. It's all about Modern Hill Country design, which disrupts traditional Texas rococo extravagance with simpler, elegant lines in classically warm materials. And it's catching on fast among Texas production home builders. BIG BUILDER's John McManus has insight into the design style's genesis and trajectory.