They seem to be all the rage and the design press dutifully repeats what they're fed by the manufacturers. "Chomatherapy is good!" "Light is therapeutic!" "Colored lights will heal the sick, make the blind see and the lame walk again!"
Hogwash, all of it.
What no one seems to be willing to say is that these showers are tacky. Multi-colored LEDs are tacky. There I said it.
Multicolored LEDs belong in theme parks, not in homes. The surest way to ruin a perfectly lovely modern bath design is to install one of these things.