The first task in the design area is to choose your background colour. Just click the colour you like and it will be added to your design. Any colour is possible. You can even give us a Pantone colour code
With the “Easy-Photo” products the background button does not work. We have a background layer that floats above the picture. Click on this background & coloured dots pop up just below the red SAVE sign. Click each dot to change its colour.