That is so Kul

I never noticed the Kuler Extension in Photoshop CS4 until now, or maybe because my version of Adobe Photoshop CS4 doesn't have it yet.

Kuler is a plug-in where you can create your own color schemes. It has a color wheel where there are arrows pointing to what color you want to include in your color swatch, it varies of what type of schemes the arrow will be based on (e.g. monochromatic, complimentary, adjacent, etc).

Our professor also discussed about layer blending modes, there are 6 categories, there's one who makes the darker colors stand out, there's one with the lighter colors, and there's one with both, one that gives a negative effect, and last is the one that focuses on color.

Here's a sample of a piece where I used a color scheme and some blending options (screen, overlay and multiply)