Can anyone link me to some photoshop tutorials for taking a normal picture and editing it to work with a color scheme?

or general rules to follow while designing a site using a specific color scheme?

Okay I'm probably going to sound stupid when I say all this but I don't quite get what you mean. Like when you say "color scheme," I think of Colour Lovers. If what you want has nothing to do with that, can you please explain or provide us with an example?

yeah i thought i should clarify, but couldnt find a decent example.

its kind of hard to find the beforehand photos, but this is an example:

http://c2.ac-images.myspacecdn.com/images0...8db6e3425e1.jpg

http://cache.umusic.com/web_assets/blink18...masthead_01.jpg

in the second photo which appears on their myspace, they kind of made it feel like a newspaper almost.

its kind of hard to find the before photos.

this band too: http://www.myspace.com/heymonday

the photo has almost a pastel/chalk kind of feel to it that the designer did to make the photo match the color of the background/fonts/etc

Once you've chosen a colour scheme from the sites TJ and Nat provided, try working with each colour through blending modes, textures, or brushes. There are loads of other simple ways to incorporate a colour scheme into an image or design. It's all about experimentation.