What is ambiance?
Ambiance is how the room feels in that moment. A product that flashes colours on and off is not ambiance. Painting the wall with a low, warm light moves it toward evening. Leaving the room green and dim recalls the quiet of a forest. The furniture stays; what changes is how the room feels.

What ambiance is not
A strip or lamp that cycles colours on and off does not change the room. It grabs attention, tires the eye and builds no feeling. For us, that is not ambiance.
Ambiance is how the room feels in that moment. Slow, soft light that settles into a place. That is Bians's job: to build the room with a feeling.
Flashing colours on and off is not ambiance. Ambiance is how the room feels.
Is it the same as ambient lighting?
In English, ambient lighting is the general light that lets you move around the room. The Illuminating Engineering Society defines it that way. A ceiling, a cove or light spread on a wall does that job.
In everyday Turkish, ambiance usually names the feeling that general light builds. The question is not whether the room has light. It is how the room feels right now. The names of the layers are in light in a room is not a single layer.
How does sunset work indoors?
The sun may be setting outside while ceiling light inside still looks as bright as noon. When you paint the wall with a low, warm light, the living room looks like evening. That is not copying a sunset. It is setting light close to the feeling of that evening.
Green, dim light does not turn the room into a forest. It still gives a similar quiet: darker, slower, less sharp. The furniture stays. What changes is how the room feels.
Do you build this from scratch every night?
No. You set a light once, then you switch to it. Colour, brightness and movement are saved together.
When the music is on, that light may also want movement. It follows the rhythm and keeps adjusting itself, whether the music is soft or loud.
Why is one setting not enough?
Because the room does not ask for one feeling. Reading, talking and resting in the evening are different needs. One general light shows the room. It does not build a feeling in the room.
There is no cap on how many ready lights you keep. You keep as many as you use.