Let the color tone mix - sample size?

Well, carefully knock out a sample piece and repair it afterwards, appreciate the professional's wage, get a warranty, etc. is definitely worth considering, especially since, as you yourself write, it is not really about large areas for the time being.

He does not necessarily want to paint as well. There are just as many who are happy to sell you the paint and that's it. Because no matter how small the business is, it brings in more than just work. Try it. Ask a master painter once. The [hardware store] will be less helpful to you.

Well, carefully tapping out a sample piece and then repairing it, rewarding the professional with their fee, getting a guarantee, etc., is definitely worth considering more closely, especially since, as you yourself write, it isn’t about large areas for now.

With all due respect... tearing down chimneys, tearing down walls, building new walls, plastering, installing windows/doors, screed and tiles, relocating heating, installing an external chimney... we do everything ourselves, so hiring a painter for painting work is an attack on the DIY ego.

It’s initially only an area of about 30 sqm, nothing dramatic.

The call to the painting company resulted in: no mixing paint and selling it without an order. So it’s off to the paint dealer. It’ll work out.

That is a damn painter master.

That is a damn painter master.

...the Franconians are somewhat strange at times

Then tell the Franconian, then you would have to buy from a Bavarian - that should usually be enough to prompt a change of mind