结构是这样的:what +colour+be+你所要问颜色的名词What+be+the+color+of+ 你所要问颜色的名词比如说 what colour is the apple? What is the colour of the apple?这个苹果是什么颜色的?
What's the color?What's the color of 后面接你要问的东西
What colour
What color it is?它是什么颜色?