The continued development of LED lighting has now been incorporated into a shower unit, allowing the user to get clean in the dark.CNET news resource Crave reported the new development by Think Geek, which developed the light to install onto traditional shower pipes.The website added that the gadget is a standard blue colour while the water is cold, transitioning into a red light when the water hits 89 degrees Fahrenheit (32 degrees Celsius).The attachment measures approximately four inches across and does not need electrical power or batteries, instead using an internal turbine to power the lighting and continuing the energy efficiency drive by restricting water flow to 2.5 gallons (11 litres) per minute.Think Geek said that turning on the bathroom light is too much for our weary eyes and many times we step into the shower before it has warmed up, with its technology solving the problem.American news resource The Cabin added that LED lighting was becoming more popular in the bathroom, with sometimes expensive installation being offset by energy savings.