Good approach - but ...

I had at that time already brought me a play of light attachment for my shower head and was so pleased (if one is so crazy to buy something) that I have all of that appointed me for the faucet.

So far so good. Installation is straight forward and the electronics also plays immediately. The water runs through good and the color changes from blue-cold, green-warm, up to red-hot.

But - and here comes the problem. Most faucets bend not in a 90 degree angle downwards, but are bent slightly forward. However, since the light beam is propagated only to under - the lighting is visible in daylight only at the upper end of the water jet. Downward apart from the color match anything.

Only in a dimly lit bathroom, the play of color comes into its own, because then you can see the illuminated sink well. In bright light, the effect is far less exciting.

So all in all a working product, with a "small" problem.