Since the elements of perspective and light and shadow are fixed in painting and don't change, they look the same no matter from what angle you look at it.

由于透视和光影的元素在绘画中是固定不变的，所以无论从哪个角度看，它们看起来都是一样的。

This is actually something called structural color and the flower is, the flower's actually using the surface to produce a color which changes color from whichever angle you look at it.

这实际上是一种叫做结构色的东西，而花就是，花实际上是在利用表面产生一种颜色，无论你从哪个角度看它都会改变颜色。