Interestingly enough, I have very lucid dreams and have realized that I am able to visualize (with color!) inside of them. I can't imagine being able to do that at will while awake, must be amazing.
For example, I had never considered that there would be different processes involved with imagining something visual vs recalling it but now that seems super obvious to me! I love when something tweaks my perspective and suddenly a new world of possibilities is revealed.