You might discover fireplace inside me
Though to water I’ve been in contrast.
You may additionally discover a twinkle
When via my pane you stare.

When of wind I’m the calm

The heart holding nonetheless.

When of you, a distinct half

My backside lid, my sill.

You might look into me

solely to see via.

You might certainly look out of me

Through my body of assorted hue.

The riddle in three components

as letters in my identify.

The riddle reveals you who I’m

But inform me simply the identical.

Who am I?