White painted room door always dirty

The desire is an eye-catcher.

There is more than enough selection! Any carpenter will make EXACTLY the door you want. Any RAL color, even if it should be melon yellow or traffic purple. Plus cutouts for glass, moldings, and who knows what else.
You just have to know what an eye-catcher is for YOU (one that you then never see in the living room and are eventually glad not to have to see anymore). Aunt Google helps.

make a hidden door:

There are also different shades of white for room doors. Can't you choose a similar white to the kitchen?