to the extent that anyone can define it, Santa Fe Style is largely a matter of shape and shading-the colors of sage-brush and ashes, watery blues and rose and clay. the sand-castle city of its birth is a town without right angles, where whitewashed walls and doorways and fireplaces bend and curve, hand shaped from clay."people just want to return to the earth" explains Rachel Elizondo, owner of a Santa Fe's art gallery