Just so there is something concrete to discuss, say I have this color scheme: http://www.lavishbootstrap.com/?image_url=http://design-seeds.com/palettes/12/SpringTones505.jpg
There are many articles about how to pick a coherent color scheme based on complementary colors, monochromatic colors, etc. however, once I have a set of colors, how do I decide which color is the header, which color is link, which is background and text. Even if I decide that I want a light on dark or dark on light scheme, putting rest of the colors on screen can still make the site look ugly.
Are there rules of thumb or general guidelines that help one decide which colors go where?