Welcome to the forums!
I agree that you have two gorgeous boys. In the budgie world a young and immature male budgie will have an overall pinkish or purplish cere that will generally turn the royal blue colour upon reaching maturity. There are exceptions on certain colour mutations where the males will keep the immature pinkish colour on their ceres.
Young females will have very light bluish ceres mingled with white and white circles around the nostrils. As they get older, the white will spread more on the cere and when closing to maturity the cere will start to get a light tan colour till it gets dark brown upon reaching breeding condition.