This isn't brown.
This is brown.
These aren't colors
These are colors.
She are tall.
She is tall.
He has long, black hair.
He has short, blonde hair.
She has short, blond hair.
She has long, brown hair.
This is brown hair
This is blond hair.
I is a girl.
I am a girl.
She isn't short.
She is short.
She is a boy.
He is a boy.
My favorite toy is a cat.
My favorite toy is a teddy bear./My favorite toy is a bear.