Wall color matching door and skirting board?

Hello everyone,
I am faced with the choice of wall color and need your advice:
Is it usual to choose the wall color exactly the same as the door color (RAL 9010 pure white) or the skirting board color (RAL 9016 traffic white)?
If I decide on RAL 9016 or RAL 9010 as the wall color, would one then also choose the ceiling color (height 2.54 m)? Or rather a shade lighter (e.g. RAL 9003 signal white) to make the room appear taller?
Does it make sense to paint rooms without natural light (bathroom, guest WC, utility room, hallway) in signal white so that they appear bright and reflect the little light well?
Or would one rather paint the entire apartment uniformly?
Questions upon questions. I am grateful for your suggestions.

Can't everyone just do as they please?

I'm glad I didn't worry about it ...

Questions upon questions. I am grateful for your advice.

If you like to think about everything.... why not?!

In my opinion, it is physically not possible to match the color because doors have a different surface texture than walls and therefore reflect and refract light differently, which is what "creates" the color in the brain.
When painting, colored accents or contrasts are usually used – I don't know anyone who uses a normal signal, traffic, or pure white – currently eher eine Grauabstufung oder ein Klecks Ocker oder Braun in die Farbe. Doors then play a subordinate role; rather, the effect on a large surface is what matters.

From experience... even unicorn white becomes darker... if not by children's hands, then over time