Thats funny, I was listening to a song that almost had the same title. [link]
How the colors are sad is good depicted together with her expression. It seems you wanted to make this fast and sketchy. Though I would say it would be more respectable if her right hand, her point finger that gets lost behind the rest of her fingers to fast seems out of place or her knuckle on the middle finger is to small.
The hand that's gripping something seems off with something. What might be an error is the large gap between her point and middle finger.
One last thing, but not that important. I wish you had done something behind her with the hazy dark silhouette. Like something more of structure. Like a window with decoration or a wall with a poster. But as you knew it yourself it wasn't worth it.
Sorry if I was picky, just trying to helpout. Lovely piece! A style you should proceed in C: