I see colors and and visions while meditating . Visions that don't make sense. Someone told me when I see them to just glance at them but don't get caught up in them. I'm getting better at staying focus while mediating. I have read the colors are the colors of the different charkas. I'm not an expert though. Just trying to educate myself a little. I have trouble with the white light. I cannot see a white light when I'm meditating. I guess it will happen in time. I have questions like you do.