Hi.,

1) In our spatreats theme, the light yellow background color comes from the file wp-content/themes/spatreats/skins/spatreats/style.css line no: 6

2) All the other brown color patches are images. The brown color image comes from the path wp-content/themes/spatreats/skins/spatreats/images/title-bg.jpg. Change that image with your own image.

3) The footer section at the bottom also uses a background image which comes from the path wp-content/themes/spatreats/skins/spatreats/images/footer-bg.jpg. Change that image with your own image.