I love the color yellow for kitchens. The first chance I got to pick wall paint colors for the house I was living in I pointed to a soft, daffodil yellow and said “I want that for the kitchen.” There was no question about it, and the next time I can paint my kitchen - it will be to as close a yellow to that soft, happy sunshine color as I can find. It can totally transform a drab, dark kitchen to an open, bright space, which is good for me because I spend a lot of time in the kitchen. Who wants to cook in a kitchen where even the walls seem lackluster and dreary?
Yellow only belongs in the kitchen though, as a wall color at least. Too bright for a bedroom or even a communal space, I fully believe yellow paint should be used sparingly, letting other less brilliant pastels soften the edges of each room in a house. The kitchen is the room that needs that little bit of extra sunlight, or at least the appearance or feel of the sun streaming through the windows.