What is Yellow?

What Is Yellow? By Mary O’Neil

Yellow is the color of the sun,
the feeling of fun,
the yolk of an egg,
a duck’s bill,
a canary bird
and a daffodil.
Yellow’s sweet corn,
ripe oats,
hummingbirds’ little throats
Summer squash
and Chinese silk
the cream on top
of Jersey milk
dandelions and daisy hearts,
custard pies and lemon tarts.
Yellow blinks on summer nights
in the off and on
of firefly lights.
Yellow’s a topaz,
a candle flame.
Felicity’s a yellow name.
Yellow’s mimosa,
and I guess,
yellow is
the color of happiness.

What is Yellow?