Painting work, which color, with fleece or without?

We also have Q3, although that is always very subjective... our walls are very smooth, gypsum plaster, so you can't see any unevenness even with raking light. Therefore, we had it painted directly, but with silicate paint; I wouldn't slap a dispersion paint on the walls. We only have fleece on the ceilings, because otherwise you can already find one or another small crack.