I love it. I love the yellow and gray. I love the gray with small splashes of yellow as an accent. Our bedroom comforter is white with grays and yellows with yellow pillows...now it isn't this bright but I don't mind it.
It makes me think of Big Bird, cheerful, happy sunshine...fun
It is definitely a like it or hate it color though so I don't think it is a great choice for the color of the year.