How do I change the colour at the top?

I want to change the colour of the header and the footer is this possible and how?

I looked for a Studio manual but didn't find it... is there such a thing?
Note for you: While searching I checked the instructions on the "Instructions" tab and found it referred to "Sleek Photo" halfway through. I don't think it makes any difference other than a small confusion when reading so you might want to generisize that.

Thank you