The Blue Pool

The Blue Pool was green today,
Not blue at all
But as green as grass.
By reason of the atmosphere
The notice said
As we went in.
Strange it seemed
That the Blue Pool
Should be green,
And that we should stand
On the sandy bank,
Admiring the weedy green water,
Famed for its blueness.
The sun it shone
And the sky was blue,
But still was the water
Greenly shining
And greenly still.