Attached Link: http://members.shaw.ca/zekaric/arch.zip

Here's the scene. The car file can be found at the given url. Row 1: shader used in bump channel. Row 2: shader used in colour channel. Col 1: veloute Col 2: formula Col 3: brick Colour channel for the brick case didn't seem to do a thing. Odd. Anyhoo. The veloute in bump channel worked as I expected. The formula case doesn't look at all like the color channel even though the formula is exactly the same. The brick has the shown problem tha the creases are light instead of being dark and the surfaces are dark instead of light. I also tried changing the brick to be in combination with a mixer operator. Meaning. Bump: Mixer - Source 1: 100 - Source 2: 0 - Blender: brick It gave a different result but the result was still incorrect, or at least not what I was hoping for.