OK it is hard to top the Beer faucet but Kraus tried.
Their Urbix faucet fascinated many people, including me. This kitchen faucet has what Kraus calls ColorSmart™ technology. This faucet has a heat activated finish that causes it to change from black to one of four colors. This is a great design for those who have tactile limitations or even to warn children in the house that the water is hot.
As you can see from the photo, Kraus won an award for this faucet. The feature photo is from the Kraus website and blog.
The video below shows the faucets in action.