Unity+

But it wasn't the slow type flashing, but randomly changing from red, green, to the normal apparent color of a star.

I would say it was a star, we've had some very cold clear nights that will, with atmospheric turbulence, produce multi-directional

refraction of the starlight, "Twinkling". Planets are less likely to twinkle like points of light such as a star does, the size of the planet's larger light beam on the sky "averages out" the turbulent effects of the atmosphere, producing a more stable image.

That would make sense. Thanks for clarifying that up.