I have decided that, in order for those of us who pay attention/care about these things, Katy Perry needs to treat her hair color like a mood ring. For example, the blue hair shall henceforth signify that she’s still bummed about her divorce:

Although I suppose you could also tell that from the fact that she’s not wearing, say, a BeDazzled banana or something that shoots fire out of the nipples, but instead a gown made of multiple rag rugs stitched together. Girl, just take a vacation — somewhere sunny — and come back with a boy toy. I promise it’ll cheer you up.