A little bit like a lyrical poem stanzas have a rhyme scheme and a rhythm. But unlike lyrical poetry a stanza has four lines that create it's whole structure.

The world was made of grey

No colors at all
And all I can say
Is that the color shattered on a wall

Walls had been grey forever
The color had no meaning
And as I pull a lever
The color appears for my well-being

Colors spread like a disease
With red, yellow, and brown
Give me some more colors please
Or I will surely frown

All these colors are made from grey
So thanks to grey, we have colors today

-Stephen Black