It's been some good 2 years since i started meditating, and when i close my eyes i can see this purple/indigo color, it's always there and never stops and i've come to the realization that i don't remember exactly at what point of my journey of meditation i started seeing it, all i know is that it wasn't there before i started meditating, sometimes when i meditate or when i'm about to fall asleep this purple light get's brighter and starts swirling outwards from the center of my vision, when i look into the sun or a bright light or when i place my arms over my head and stretch my back the light seems to increase, rarely sometimes i also see blue and green lights and patterns, sometimes i see symbols that resemble the sigils of the demons formed from this light but i can never remember or identify exactly what sigil i saw, i recently began seeing a downward pointed pentagram and and if i belive correctly the pentagram is a symbol relating to the 5 elements and life power, could it possible mean something negative because it's pointed downwards? Does this light emanates from the sixth or seventh chakra? Perhaps from the pineal gland, i've read a page on wikipedia talking about a phenomena called phospenes but i'm really not sure what to make of this, i'm not sure if the fact that i can never seem to see red, orange or yellow light can mean something good, does anyone else ever experienced anything similar? Should i see this as something beneficial?