The 'beige' floor tile has a matte finish, the shower tile is polished. To add additional contrast the 'base' tile in the waistcoat is 'chocolate' with a polished surface.
Solar heated anti-freeze heats potable water in the holding tank. The tankless (on demand) water heater draws water from the holding tank as usage demands.
Even though it was 32 degrees in Portland this morning the Solar heated water is 100 degrees. Meaning the on demand heater (Set at 120 degrees) has to heat the water only 20 degrees. One green machine.