Final result.
I'm happy with the way it turned out. Ah, it feels so good getting rid of that hideous yellow. I decided to go with an off-white color, with a slight tint of beige, to blend the green bedroom and the peach kitchen together. Overall, I'm happy with the way my flat looks now. I feel that the color of a room has a big effect on your mood, and now I'm finally in a "peaceful" mood in any room, even the hallway...!