For many of my childhood years, the walls in my room were painted fairly bright yellow - which maybe wasn’t such a great thing:
Like the sun, too much bright yellow hurts our eyes and agitates us. Brilliant yellows make our eyes tired. Therefore, like road workers use yellow flags for caution, you want to use yellow with caution.
Paint walls a pale yellow to mimic a sun-filled space and create a soothing feeling for the room’s occupants. Choose soft creamy yellows, not dingy, dirty-looking yellows that make people nauseous.
In contrast, bright-yellow painted walls can cause feelings of turmoil and hostility. Use bright yellows sparingly, especially in high-anxiety spaces like kitchens. Naturally bright rooms that have been painted bright yellow over-stimulate some people and may bring about angry feelings. Babies cry more and adults lose their tempers more often when surrounded by bright yellow walls.
The exterior looks fantastic, though!