前面的寒暄你自己编,涉及到colour的,可以用这些:
What colour is it/this/that?(提问单数物体)
What colour are they/these/those?(提问复数物体)
They are blue/white/browned/yellow/black.
It's blue/white/browned/yellow/black.
What colour is the coat?(用What colour +be+ 定冠词+物体,对特指的某物颜色提问)
It's blue/white/browned/yellow/black.