Color scheme for my site

I need to change the color scheme used in my site. My site is [login to view URL] . I do not want complete redesign of the site, just want to set new colors , so that it would look better. I am open to minor design changes to make it look better. ## Deliverables Currently the colors are specified in the html and some in css file. The coder need not change the colors himself, if he is finding it difficult to change. He can just specify the colors, I will change it myself.