Katy Perry Dyes Her Hair ‘Slime Green': Do You Approve?

'Dark Horse' singer debuts bold new 'do just in time for Spring.

It was really only a matter of time. After dying her hair cotton-candy pink, purple, blue and purple and blue, Katy Perry is even closer to a full rainbow after dying her hair green.

Slime green, that is.

The “Dark Horse” singer debuted her new ’do on Monday (April 7), just in time for spring. It’s not completely green — her roots and bangs are still her signature black — but it’s definitely a big change-up for the singer.

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