Use one color thread in a textured pattern. What color value would be your priority to showcase the pattern design?
I just took my fabric off the rigid heddle loom. It is my first pick-up stick project and created warp floats as the pattern. I like the fabric, but the texture pattern does not display as well as I would like. My blue is a muted gray shade of blue. The floats that show best are where the yarn lightens. In viewing examples of the same pattern, at first I would have used the word brighter to describe those hues. That is not it. Clear or pure colors?
Other examples: http://knitty.com/ISSUEss16/FEATss16GW.php#PATT