Are there any colors you do like? You don't like white, gray, or any bright colors.
White is fine as long as everything or nearly everything isn't white. The current fad of bright white ceilings, walls, trim, cabinets, white quartz countertops, and lighting it all to 100 fc with 5000 K LEDs is just way too much white, even if the floors are not white (generally 8" wide brownish-gray fake-wood-grain laminate.) White walls and ceilings are fine, so is the white quartz, but you'd need a classic medium-colored wood floor and cabinets to not end up with too much white. Or go with the white ceilings, trim, cabinets, and white quartz countertops but use a light, nonwhite wall paint and a medium colored wood floor. I also generally avoid lighting >2700 K in indoor locations with a finished ceiling.
Colors are fine too, as long as they are not overly dark. Light blue, light tan/beige, and pale yellow are fine, navy blue, mud brown, and Caterpillar gold are not, for example. Generally we stick to fairly light and neutral colors.
One bedroom had dark red on one wall and blakc chalkboard paint on another wall. I thought it would be hard to cover, but one coat of primer and a coat of paint covered it right up.
I never had to paint over chalkboard paint, but lots of dark red, navy blue, black, dark brown, and in one house, multiple large and very amateurish murals that the previous owner's wife had painted. The murals stank as she'd masked off several parts of it, leaving a ridge of paint and that had to be sanded smooth else it all would have telegraphed through.
