The color sheme cannot be simply included.
Write down which colors you are using, create a new forum style and modify it until it meets your page design.
Then include navbars, header and footer and thats it.
And btw. how easy it sounds, this can be work for days and no one will offer you a CLICK HERE AND THERE solution.
Its very important that you understand how your board works and customizing it is a good way to see this.
If you need help then please ask but don't request a complete instructions file from someone how to setup everything for you