I discuss new ways to grow diamond that promise near-deterministic design of fluorescent color-centers, optimized for quantum sensing and metrology applications. The key is to grow diamond from organic molecules at a low enough temperature such that only some of the molecules decompose. This approach gives unprecedented control over the properties of diamond color centers by decoupling diamond-growth from color-center creation. In addition, low growth temperature produces high quality diamonds and allows a wider choice of growth pressures than is currently believed possible.