"I could see a great pool bath using all white tile grouted in an aqua blue being whimsical and fun, or combining a blue-glazed subway tile with a green grout color for something unexpected in a ...

Picture a bathroom in various shades of soothing blue, or a kitchen with a calming green tile theme ... straying from the color drenching concept. Choosing tile grout color is another fun task.

Now, scientists have developed an innovative, carbon-neutral grout made from waste fluids of geothermal energy harvesting systems. Their new material shows a 50% increase in liquefaction ...