Visualizing while meditating

Do people normally see color when they close there eyes and meditate? I’ve been seeing certain things lately when I have my eyes closed during a meditation a flame that is red orange with a blue/purplish silhouette around it it would change colors to a almost dark but can still make it out then a red sun that would go dark in some of these I could vaguely make out silhouettes inside the flame.very vivid colors but always a flame and sun, the flame appeared to be hovering over a black hole this is something that is new. Any thoughts insights or is this optical illusion type thing I was told people don’t see vivid colors like that