Lighter or pleasant colors tend to be more positive. Darker colors tend to represent the darkness of the mind, like black, stormy grey, etc.
Despite the colors you see, you need to connect them to the images and symbols of your experiences in order to have a complete picture of what the Being is communicating.
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami