Lit ambient faucet.
Remove the top of a spigot, create a small-scale canyon, add backlighting and you’ve got ambient water fittings.
That’s what Germany’s Hansa is doing with Hansacanyon, by adding LEDs that change color as a function of water temperature so you can see when it’s hot or cold.
Also included; precise temperature control, for sinks, baths and showers.
Lit temperature controls.