Originally Posted by
Merlock
*sigh* You're getting yourself into a self-imposed whirlpool like so many other such topics I've seen here.
Your brain didn't make up the colour "red". The physical world has many colours. People in ages passed created language to interact with each other verbally and in more detail. Hence, the language is what makes the colour red to be called "red".
Colours are named upon observation. You cannot create something you don't know of. Thus, in a dream, interacting with your own mind, if you do not have an outer source, you will not "create" any new colours. Everything in your mind within this life is information you've gained from the world.
In essence, until someone shows you a new colour, you won't conceive it. Be it a new colour that appears in the world for your viewing or a colour you gain from an astral store of knowledge that you access with your mind...a new colour would come from a source independent of yourself.