the same colour comes up in meditiaton when i succumb to thoughts.Even when im surrounded by darkness? you guys think this holds any remote significance?
I think blue is like the stretch lines of the mind because blue equals space. I remember blue a long time ago. I think gold made an equal impression. Then mystical inseparability of color. In Vedas called soma and Vaishvanara lake and other things and is really natural efflorescence of ones own person. Eyes have an ability to somehow perceive efflorescence of personal subatomic space. Which one can see doesn't seem to have an ending just with the body. Good question for nice esoteric answer.
Seeing colors in meditation relates to chakras. I'd guess that whatever thoughts you have that bring about this "sight" are related to personal expression in some way. Google "throat chakra" and you'll get lots of info. At any rate, don't spend too much time on it, just go back to meditating and lets the thoughts drift off.
You need to meditate to see colors? I can see them with my eyes wide open without any effort at all. Seriously, these visions and even strange powers that come during and as a result of long meditation are only a distraction from the goal of union with the divine. It is the mind putting forth its full power to save itself. And that is an awesome power.