That's great advice, especially regarding the start pattern, thank you for that!

Yes I am afraid that this is the safest option indeed... Thank you!

Haha that's too bad, can imagine you got pretty excited when there was a perfect match... Temporary unfortunately..

Yes there are quite some walls in the apartment, but I am considering to repaint only about 2-3 walls. I will get new lamps today, maybe playing smart with the lights/shadows will already solve this. Otherwise I'll have to repaint sooner or later I'm afraid.

It's a good idea to indeed cut a piece and bring it to a DIY shop, thanks!

Thank you for your reply!

I will check with the owner, who painted it initially, which luster he used. Maybe even re-order the exact same materials he used back then, and likely repaint the entire wall.

In addition to degreasing the wall, do you have any recommendations to ensure that the final result of the repainted wall will be the same as the original one?