Well, for now*.
Bright Bazaar calls it “make-you-smile style.”
Jonathan Adler calls it “Happy Chic.”
OhJoy! keeps it simple and calls it “whimsy.”
These designers/bloggers and I have one thing in common: they design around the idea that your home and the things in it should make you happy. To them, there’s no need for fussy formalities; your home should be, look, and feel FUN. I never called it anything, but I’ve loved bright colors and silly accents for as long as I can remember.