What would make a star flash red and blue?

[Liger20]

Hello, several nights ago I was outside looking at the sky. I noticed this strange looking star near the horizon, and I swear to you, it kept flashing from red to blue and back. I vaguely remember reading something about this, but I don't quite remember what it was.

 

[chemisttree]

Atmospheric distortion causes the light to spread out into its various colors. Bad seeing close to the horizon that night.