tickled pink
US /ˈtɪk.əld pɪŋk/
UK /ˈtɪk.əld pɪŋk/

1.
to be very pleased or delighted about something
:
•
She was absolutely tickled pink when she heard the good news.
•
My grandmother will be tickled pink if you visit her.
to be very pleased or delighted about something