What colour are your friend's eyes?
They are...
What colours are your eyes?
They are...
What colour is you hair?
It is...
What colour is your friend's bedroom?
It is...
What colour is your T-shirt?
It is...
What colour is your bedroom?
It is...
What colour is you friend's hair?
It is...
What colour is your friend's T-shirt/
It is...