What color is it? 它是什么颜色？

https://www.youtube.com/watch?v=ybt2jhCQ3lA&t=45s
So long as we know the colors, we can describe the things around us. Let's find out what color it is.
只要我们知道了颜色，我们就可以来描述我们身边的事物。我们一起来看看有什么颜色吧。