Today's OneWord: Vertical

I can't see colors. Shapes, sure - squares and triangles and circles and cubes. I can detect the verticals and the horizontals, the sharp and the soft, the texture and the tactile. I can see movement - quick or slow, sometimes even when it's such a blur that sound trails after it like a confused child. But colors? Nothing of the sort. Sepia is a foreign word to me. It's synonymous to my reality.