Kingdom of Knuffel

You're so colorful that you can't be anything else but light

I think you're light as well, just more of an early morning/late evening kind of light

You're earth, you can't be anything else but earth

I think your an air element.

With all your bubbles you have to be air.

I think you're water, due to your skin

Water highly likely

I'm getting ice warrior vibe from you, so water it is.

Maybe air?

I think your element's air.

Elements