When the lights go out, does anyone else's vision flash colors? (alternating usually between red and green) I'm not sure if this normal or an affect of something else.

It sounds like you're eyes are adjusting from the light difference. Although you do need a yearly eye exam, if you haven't had one recently, I would suggest scheduling an appointment.

Last time I got one was about a year ago. I was just wondering if it was normal or if I should ask my neurosurgeon about it since I'm seeing him soon