What are all the different types of colors Katy perry had in her head?

Katy Perry is known for her bold and vibrant hair colors, which have included shades such as black, blonde, pink, blue, purple, and even multi-colored styles. Over the years, she has often changed her hairstyle and color to reflect her evolving artistic persona. Notably, her hair has been a significant part of her identity, with each color choice often aligning with her music and fashion.