For the most part I don’t dream in colour. Oh, sometimes I can vaguely remember a splash of red or blue on infrequent occasions, but for the most part all I remember is shades of black and grey. I can’t visualize colour either, I can’t see it in my mind’s eye. I can see shapes and silhouettes (vague, grey, and indistinct though they may be), I can hold 3d objects in my mind and rotate them around, and intellectually I could tell you the colour of something I remember… but the colours are just words to me. Red is “R” “E” “D”, not RED. I understand why this means that I do not draw or paint well. I cannot capture an image in full definition in my mind so that I might reproduce it on paper.