Color palette # 1323 Cold shades of peacock feathers use in bedrooms. Violet, Lilac or Blue Beyond, Blue-Green/Teal, Light Asparagus or Haven Green, and Isle of Pines or Kale Green. would be a fun mix of colors for the guest room
I would also use this website for color inspiration for other projects! "I absolutely adore this website, because it has so many color palette ideas for rooms! It makes designing a room so much easier!