I have seen a star change colour. There is one that constantly changes/flickers in red, green, blue, and purple. It's always in the same part of the sky, except of course, as the seasons go by, it moves in relation to the other stars moving.
However, in this video, the witnesses talk of several of them being seen at the same time, but in different parts of the sky? AND this is happening quite regularly, but they haven't been noticed before.
It's a quandary, and as I have very little knowledge in science, I am unsure what to think of this one.